What's the difference between head and helmet?

Head


Definition:

  • (n.) The anterior or superior part of an animal, containing the brain, or chief ganglia of the nervous system, the mouth, and in the higher animals, the chief sensory organs; poll; cephalon.
  • (n.) The uppermost, foremost, or most important part of an inanimate object; such a part as may be considered to resemble the head of an animal; often, also, the larger, thicker, or heavier part or extremity, in distinction from the smaller or thinner part, or from the point or edge; as, the head of a cane, a nail, a spear, an ax, a mast, a sail, a ship; that which covers and closes the top or the end of a hollow vessel; as, the head of a cask or a steam boiler.
  • (n.) The place where the head should go; as, the head of a bed, of a grave, etc.; the head of a carriage, that is, the hood which covers the head.
  • (n.) The most prominent or important member of any organized body; the chief; the leader; as, the head of a college, a school, a church, a state, and the like.
  • (n.) The place or honor, or of command; the most important or foremost position; the front; as, the head of the table; the head of a column of soldiers.
  • (n.) Each one among many; an individual; -- often used in a plural sense; as, a thousand head of cattle.
  • (n.) The seat of the intellect; the brain; the understanding; the mental faculties; as, a good head, that is, a good mind; it never entered his head, it did not occur to him; of his own head, of his own thought or will.
  • (n.) The source, fountain, spring, or beginning, as of a stream or river; as, the head of the Nile; hence, the altitude of the source, or the height of the surface, as of water, above a given place, as above an orifice at which it issues, and the pressure resulting from the height or from motion; sometimes also, the quantity in reserve; as, a mill or reservoir has a good head of water, or ten feet head; also, that part of a gulf or bay most remote from the outlet or the sea.
  • (n.) A headland; a promontory; as, Gay Head.
  • (n.) A separate part, or topic, of a discourse; a theme to be expanded; a subdivision; as, the heads of a sermon.
  • (n.) Culminating point or crisis; hence, strength; force; height.
  • (n.) Power; armed force.
  • (n.) A headdress; a covering of the head; as, a laced head; a head of hair.
  • (n.) An ear of wheat, barley, or of one of the other small cereals.
  • (n.) A dense cluster of flowers, as in clover, daisies, thistles; a capitulum.
  • (n.) A dense, compact mass of leaves, as in a cabbage or a lettuce plant.
  • (n.) The antlers of a deer.
  • (n.) A rounded mass of foam which rises on a pot of beer or other effervescing liquor.
  • (n.) Tiles laid at the eaves of a house.
  • (a.) Principal; chief; leading; first; as, the head master of a school; the head man of a tribe; a head chorister; a head cook.
  • (v. t.) To be at the head of; to put one's self at the head of; to lead; to direct; to act as leader to; as, to head an army, an expedition, or a riot.
  • (v. t.) To form a head to; to fit or furnish with a head; as, to head a nail.
  • (v. t.) To behead; to decapitate.
  • (v. t.) To cut off the top of; to lop off; as, to head trees.
  • (v. t.) To go in front of; to get in the front of, so as to hinder or stop; to oppose; hence, to check or restrain; as, to head a drove of cattle; to head a person; the wind heads a ship.
  • (v. t.) To set on the head; as, to head a cask.
  • (v. i.) To originate; to spring; to have its source, as a river.
  • (v. i.) To go or point in a certain direction; to tend; as, how does the ship head?
  • (v. i.) To form a head; as, this kind of cabbage heads early.

Example Sentences:

  • (1) This study was undertaken to determine whether the survival of Hispanic patients with squamous cell carcinoma of the head and neck was different from that of Anglo-American patients.
  • (2) An association of cyclophosphamide, fluorouracil and methotrexate already employed with success against solid tumours in other sites was used in the treatment of 62 patients with advanced tumours of the head and neck.
  • (3) Head-injured patients had a low thyroxine (T4), low triiodothyronine (T3), and high reverse T3.
  • (4) Currently, photodynamic therapy is under FDA-approved clinical investigational trials in the treatment of tumors of the skin, bronchus, esophagus, bladder, head and neck, and of gynecologic and ocular tumors.
  • (5) A triphasic pattern was evident for the neck moments including a small phase which represented a seating of the headform on the nodding blocks of the uppermost ATD neck segment, and two larger phases of opposite polarity which represented the motion of the head relative to the trunk during the first 350 ms after impact.
  • (6) Businesses fleeing Brexit will head to New York not EU, warns LSE chief Read more Amid attempts by Frankfurt, Paris and Dublin to catch possible fallout from London, Sir Jon Cunliffe said it was highly unlikely that any EU centre could replicate the services offered by the UK’s financial services industry.
  • (7) By means of computed tomography (CT) values related to bone density and mass were assessed in the femoral head, neck, trochanter, shaft, and condyles.
  • (8) A substance with a chromatographic mobility of Rf = 0.8 on TLC plates having an intact phosphorylcholine head group was also formed but has not yet been identified.
  • (9) Lin Homer's CV Lin Homer left local for national government in 2005, giving up a £170,000 post as chief executive of Birmingham city council after just three years in post, to head the Immigration Service.
  • (10) The skull films and CT scans of 1383 patients with acute head injury transferred to a regional neurosurgical unit were reviewed.
  • (11) Both Ken Whisenhunt and Lovie Smith were fired as head coaches after the 2012 season.
  • (12) Thirteen patients had had a posterior dislocation with an associated fracture of the femoral head located either caudad or cephalad to the fovea centralis (Pipkin Type-I or Type-II injury), one had had a posterior dislocation with associated fractures of the femoral head and neck (Pipkin Type III), two had had a posterior dislocation with associated fractures of the femoral head and the acetabular rim (Pipkin Type IV), and three had had a fracture-dislocation that we could not categorize according to the Pipkin classification.
  • (13) Eight cases of calcification following anterior dislocation of the head of the radius are described.
  • (14) Younge, a former head of US cable network the Travel Channel, succeeded Peter Salmon in the role last year.
  • (15) Martin Wheatley will remain head of the Conduct Business Unit and become the future chief executive of the FCA.
  • (16) It happens to anyone and everyone and this has been an 11-year battle.” Emergency services were called to the oval about 6.30pm to treat Luke for head injuries, but were unable to revive him.
  • (17) This study reviewed 148 patients who had received radiation for head and neck cancer.
  • (18) In this study, a technique is described by which large obturators can be retained with an acrylic resin head plate.
  • (19) The authors describe a new technique for evaluating traumatic conditions to the elbow: the radial head-capitellum view.
  • (20) Nick Robins, head of the Climate Change Centre at HSBC, said: "If you think about low-carbon energy only in terms of carbon, then things look tough [in terms of not using coal].

Helmet


Definition:

  • (n.) A defensive covering for the head. See Casque, Headpiece, Morion, Sallet, and Illust. of Beaver.
  • (n.) The representation of a helmet over shields or coats of arms, denoting gradations of rank by modifications of form.
  • (n.) A helmet-shaped hat, made of cork, felt, metal, or other suitable material, worn as part of the uniform of soldiers, firemen, etc., also worn in hot countries as a protection from the heat of the sun.
  • (n.) That which resembles a helmet in form, position, etc.
  • (n.) The upper part of a retort.
  • (n.) The hood-formed upper sepal or petal of some flowers, as of the monkshood or the snapdragon.
  • (n.) A naked shield or protuberance on the top or fore part of the head of a bird.

Example Sentences:

  • (1) It follows that he would not allow a biker to give evidence while wearing a crash helmet with the visor down.
  • (2) The design of motor cycle helmets has been changing over the years and at the present time there are two basic types in popular use: "full-face" and "jet" helmets.
  • (3) Ultimately, we hope such a program will increase helmet use and consequently reduce morbidity and mortality from head injury in Indiana's children.
  • (4) The study showed surprising results: in the majority of cases, the helmet does not protect the wearer, but instead intensifies the damage caused by the bullet.
  • (5) 9.18am GMT Johnson says he does not wear his helmet all the time when he cycles.
  • (6) The front door is open; outside, a line of police carrying riot helmets files past.
  • (7) Fifty-seven percent of riders were wearing helmets during the mishap.
  • (8) The protective performance of the helmet shells, impact absorbing liners, and retention systems were evaluated, and the severity of the impacts sustained by the helmets was simulated in the test laboratory.
  • (9) Members of the elite police squad wearing helmets came running out of the building and a police union representative at the cordon around the area shouted: "He's dead, he's dead."
  • (10) Ten subjects took part in the trial in a tropical environment by wearing helmets repeatedly (6 h a day) for one month.
  • (11) Here's one entry: 1995: The government is full of jack-booted thugs in bucket helmets.
  • (12) The analysis of the results allowed a conclusion that the latter are concerned with a discoupling effect of substances on oxidative phosphorylation in mitochondria of helmets and their host.
  • (13) To better understand motion in the cervical spine related to helmet wearing and removal, normal volunteers underwent videotaped fluoroscopy during helmet removal and lateral spine X-rays in various positions.
  • (14) We describe the mechanics of a multifaceted campaign undertaken to alter this situation, involving a coalition of health, bicycle, and helmet industry organizations.
  • (15) Japan's prime minister, Shinzo Abe, wearing a red helmet, during a tour of the Fukushima Daiichi plant.
  • (16) This article presents 1990 self-reported data from U.S. students in grades 9-12 regarding the prevalence of three behaviors that reduce the risk for injuries from motor-vehicle crashes-safety-belt use, motorcycle-helmet use, and bicycle-helmet use.
  • (17) The helmet usage was analyzed in two clinical study populations including 200 injured from the county of Västerbotten from two periods 1979-1980 and 1985-86.
  • (18) These data support the need for both increased public education regarding helmet use and mandatory helmet use legislation.
  • (19) The relative frequency of serious head injury was highest for drivers not wearing helmets who were involved in collisions at low or high speeds.
  • (20) Women's lacrosse is potentially hazardous because, unlike men's lacrosse, helmets and face masks are not required.