What's the difference between keel and rigid?

Keel


Definition:

  • (v. t. & i.) To cool; to skim or stir.
  • (n.) A brewer's cooling vat; a keelfat.
  • (n.) A longitudinal timber, or series of timbers scarfed together, extending from stem to stern along the bottom of a vessel. It is the principal timber of the vessel, and, by means of the ribs attached on each side, supports the vessel's frame. In an iron vessel, a combination of plates supplies the place of the keel of a wooden ship. See Illust. of Keelson.
  • (n.) Fig.: The whole ship.
  • (n.) A barge or lighter, used on the Type for carrying coal from Newcastle; also, a barge load of coal, twenty-one tons, four cwt.
  • (n.) The two lowest petals of the corolla of a papilionaceous flower, united and inclosing the stamens and pistil; a carina. See Carina.
  • (n.) A projecting ridge along the middle of a flat or curved surface.
  • (v. i.) To traverse with a keel; to navigate.
  • (v. i.) To turn up the keel; to show the bottom.

Example Sentences:

  • (1) In 2007, she put the Oscars back on an even keel after poor reviews for the satirist Jon Stewart in 2006.
  • (2) As they were leaving, he told the court, D’Souza took charge of Keeling and asked Sagar to leave the pair alone.
  • (3) But before you keel over in shock she's back on form arguing that the government use the money spent on overseas aid to boost investment in prisons.
  • (4) In that time, MacKeown has had to endure tastleless coverage of her daughter’s drug use and sex life, and close scrutiny of her own lifestyle, and of her decision to allow Keeling to travel alone to Anjuna while the family toured a neighbouring state.
  • (5) Because we know how even-keeled and slow-to-anger people are during those types of situations.
  • (6) This bar is only a couple of miles from where the body of British teenager Scarlett Keeling was found five years ago.
  • (7) Another ship, called TransSpar and designed by Canada's Extreme Ocean Innovation , has a huge, deep keel for stability, giving it the shape of a seahorse, while a third is an adaptation of a Norwegian Navy minesweeping hovercraft .
  • (8) A silastic keel is secured between the vocal cords at the anterior commissure by means of a loop of nylon passing externally through the crico-thyroid and crico-hyoid membranes.
  • (9) This instrument will allow endoscopic insertion of sutures for lateralization of a paralyzed vocal cord or for fixation of endoscopically inserted stents or keels in laryngotracheal stenosis.
  • (10) In a rare case of simultaneous glottic and supraglottic webbing a tantalum keel, as described by McNaught, and a silcone elastomer keel, as described by Montgomery, were placed simultaneously via laryngofissure.
  • (11) Willetts has appointed Dame Janet Finch, a former vice-chancellor of Keele University, to sit down with academics and publishers to work out how an open-access scheme for publicly-funded research might function in the UK.
  • (12) Fifteen-year-old Scarlett Keeling was found bruised and half-dressed in the waters of popular Anjuna beach in February 2008.
  • (13) Professor Peter Styles, professor of applied and environmental geophysics at Keele University, said the find could supply the UK for decades.
  • (14) In chickens he found NCD (pseudo-fowlpest) and in ducklings a mortal disease which the author then called 'keeling disease' but which he many years later, recognized as virus hepatitis.
  • (15) Analysis of the 12-wk pooled data from both cage and floor groups indicated the occurrence of isometric growth of the shank and breast in G1 and of the breast only in G2 and allometric growth of the thigh and keel in both genotypes.
  • (16) An endoscopic technique using a Teflon keel which has been successful in properly selected cases is presented.
  • (17) Pain threshold was measured in 106 patients with rheumatoid arthritis, 50 with ankylosing spondylitis, and 50 normal controls using Keele's algometer.
  • (18) I did not need O-levels to lead, to have judgment, to make decisions and to be decided.” Nevertheless, in later life he would serve several universities, as pro-chancellor of Keele, then chancellor of Manchester Metropolitan and first chancellor of Chester.
  • (19) I kept falling asleep during morning session, keeling over into the person next to me.
  • (20) Nonarticulated components, such as the solid-ankle cushion heel foot, have various keel designs; energy-storing variants provide springiness for walking and running.

Rigid


Definition:

  • (a.) Firm; stiff; unyielding; not pliant; not flexible.
  • (a.) Hence, not lax or indulgent; severe; inflexible; strict; as, a rigid father or master; rigid discipline; rigid criticism; a rigid sentence.

Example Sentences:

  • (1) By the 1860s, French designs were using larger front wheels and steel frames, which although lighter were more rigid, leading to its nickname of “boneshaker”.
  • (2) Diphenoxylate-induced hypoxia was the major problem and was associated with slow or fast respirations, hypotonia or rigidity, cardiac arrest, and in 3 cases cerebral edema and death.
  • (3) Pitlike surface structures seen in negatively stained whole cells and thin sections were correlated with periodically spaced perforations of the rigid sacculus.
  • (4) Rigidly fixing the pubic symphysis stiffened the model and resulted in principal stress patterns that did not reflect trabecular density or orientations as well as those of the deformable pubic symphysis model.
  • (5) The fracture can be treated arthroscopically by rigid internal fixation, while at the same time treating possible associated lesions.
  • (6) This study examined the extent to which normal learners identified as cognitively rigid could use alternate strategies when instructed to do so.
  • (7) In some patients stimulation can reduce rigidity and coactivation of muscles immediately or slowly over days or months.
  • (8) Major alleviation of the rigidity and bradykinesia with chronic oral l-dopa therapy was not accompanied by any change in the silent period.
  • (9) At clinically achievable concentrations, the combination of nafcillin plus gentamicin produced enhanced killing against 13 of 14 strains of enterococci and was synergistic (by very rigid criteria) against 10 of 14 strains.
  • (10) Low-temperature NMR studies indicate that 5 is more rigid than tamoxifen; interconversion between enantiomeric conformers is slow on the NMR time scale at -75 degrees C.
  • (11) Global 'abnormality', hunching (rigid arching of back), hindlimb abduction, forepaw myoclonus, stereotyped lateral head movements, backing, and immobility occurred significantly only in drug-treated rats.
  • (12) A study was made of twelve cases with uveitis, glaucoma and hyphema (UGH) caused by rigid intraocular posterior chamber implants.
  • (13) Eight alpha-helices behave as relatively rigid bodies and corner regions are more flexible, showing larger fluctuations.
  • (14) This modification allows for precision of movement, ease of repositioning, and adaptation of rigid skeletal stabilization of mobilized osseous segments in the chin.
  • (15) The pedicle screw systems were always the most rigid.
  • (16) Lactate dehydrogenase (LDH) levels and subunit isozyme patterns in cornea were monitored in 36 albino rabbits wearing thick, rigid, gas-permeable contact lenses for periods of 24 h, 2 and 7 days, and 1 and 3 months.
  • (17) The prevalence of sleep apnea, apnea index, duration of the longest episode of apnea, and penile rigidity were tabulated.
  • (18) During the last 21 months, 12 additional children have been managed with a more stringent protocol combining neck immobilization in a rigid cervical brace for 3 months and restriction of both contact and noncontact sports, together with a major emphasis on patient compliance.
  • (19) In the second placebo controlled experiment 150 mg im testosterone enanthate administration was associated with enhanced rigidity of NPT but with no effect on frequency or circumference change of NPT and no effect on frequency of REM.
  • (20) The whole isolator system included two rigid supply isolators, too.