(n.) The fluid which we breathe, and which surrounds the earth; the atmosphere. It is invisible, inodorous, insipid, transparent, compressible, elastic, and ponderable.
(n.) Symbolically: Something unsubstantial, light, or volatile.
(n.) A particular state of the atmosphere, as respects heat, cold, moisture, etc., or as affecting the sensations; as, a smoky air, a damp air, the morning air, etc.
(n.) Any aeriform body; a gas; as, oxygen was formerly called vital air.
(n.) Air in motion; a light breeze; a gentle wind.
(n.) Odoriferous or contaminated air.
(n.) That which surrounds and influences.
(n.) Utterance abroad; publicity; vent.
(n.) Intelligence; information.
(n.) A musical idea, or motive, rhythmically developed in consecutive single tones, so as to form a symmetrical and balanced whole, which may be sung by a single voice to the stanzas of a hymn or song, or even to plain prose, or played upon an instrument; a melody; a tune; an aria.
(n.) In harmonized chorals, psalmody, part songs, etc., the part which bears the tune or melody -- in modern harmony usually the upper part -- is sometimes called the air.
(n.) The peculiar look, appearance, and bearing of a person; mien; demeanor; as, the air of a youth; a heavy air; a lofty air.
(n.) An artificial or affected manner; show of pride or vanity; haughtiness; as, it is said of a person, he puts on airs.
(n.) The representation or reproduction of the effect of the atmospheric medium through which every object in nature is viewed.
(n.) Carriage; attitude; action; movement; as, the head of that portrait has a good air.
(n.) The artificial motion or carriage of a horse.
(n.) To expose to the air for the purpose of cooling, refreshing, or purifying; to ventilate; as, to air a room.
(n.) To expose for the sake of public notice; to display ostentatiously; as, to air one's opinion.
(n.) To expose to heat, for the purpose of expelling dampness, or of warming; as, to air linen; to air liquors.
Example Sentences:
(1) We attribute this in part to early diagnosis by computed tomography (CT), but a contributory factor may be earlier referrals from country centres to a paediatric trauma centre and rapid transfer, by air or road, by medical retrieval teams.
(2) In a debate in the House of Commons, I will ask Britain, the US and other allies to convert generalised offers of help into more practical support with greater air cover, military surveillance and helicopter back-up, to hunt down the terrorists who abducted the girls.
(3) Sperm were examined at 4.5 h, 8 to 9 h, and 24 to 25 h of incubation (37 degrees C, 5% CO2, and 95% air).
(4) In the present study, respirometric quotients, the ratio of oral air volume expended to total volume expended, were obtained using separate but simultaneous productions of oral and nasal airflow.
(5) The manufacturers, British Aerospace describe it as a "single-seat, radar equipped, lightweight, multi-role combat aircraft, providing comprehensive air defence and ground attack capability".
(6) By increasing luminal air pressure from 10 to 20 cm H2O a significant reduction in GBF was observed.
(7) The dangers caused by PM10s was highlighted in the Rogers review of local authority regulatory services, published in 2007, which said poor air quality contributed to between 12,000 and 24,000 premature deaths each year.
(8) Do [MPs] remember the madness of those advertisements that talked of the cool fresh mountain air of menthol cigarettes?
(9) Enough with Clintonism and its prideful air of professional-class virtue.
(10) These data suggest that submaximal exercise and cold air exposure enhance nonspecific bronchial reactivity in asthmatic but not in normal subjects.
(11) The phenylalanine model allows the rapid assessment of whole body and muscle protein turnover from plasma samples alone, obviating the need for measurement of expired air CO2 production or enrichment.
(12) Age-specific MRs for the over-75-year age group were also not related to the winter air temperatures in the eight cities.
(13) They urged the Department of Environment, Food and Rural Affairs to make air quality a higher priority and release the latest figures on premature deaths.
(14) Of great influence on the results of measurements are preparation and registration (warm-up-time, amplification, closeness of pressure-system, unhurt catheters), factors relating to equipment and methods (air-bubbles in pressure-system, damping by filters, continuous infusion of the micro-catheter, level of zero-pressure), factors which occur during intravital measurement (pressure-drop along the arteria pulmonalis, influence of normal breathing, great intrapleural pressure changes, pressure damping in the catheter by thrombosis and external disturbances) and last not least positive and negative acceleration forces, which influence the diastolic and systolic pulmonary artery pressure.
(15) Both eosin derivatives, however, inactivate acetylcholinesterase upon illumination of air-equilibrated samples of hemoglobin-free labeled ghosts.
(16) The biggest single source of air pollution is coal-fired power stations and China, with its large population and heavy reliance on coal power, provides $2.3tn of the annual subsidies.
(17) Rats were injected subcutaneously with 10 ml of air into the dorsal skin to make an air-pouch and with 2 ml of antiserum at an appropriate dilution for passive sensitization, and then 5 ml of air was removed.
(18) Of the other patients, four panicked with sodium lactate, none with 5% CO2, and one with room air hyperventilation.
(19) In presence of oxygen (air) the phototactic reaction values are somewhat lower than in its absence.
(20) In general, air from the mediastinum far more often enters the left pleural cavity than the right one.
Spiracle
Definition:
(n.) The nostril, or one of the nostrils, of whales, porpoises, and allied animals.
(n.) One of the external openings communicating with the air tubes or tracheae of insects, myriapods, and arachnids. They are variable in number, and are usually situated on the sides of the thorax and abdomen, a pair to a segment. These openings are usually elliptical, and capable of being closed. See Illust. under Coleoptera.
(n.) A tubular orifice communicating with the gill cavity of certain ganoid and all elasmobranch fishes. It is the modified first gill cleft.
(n.) Any small aperture or vent for air or other fluid.
Example Sentences:
(1) The spiracular organ is a tube (skate) or pouch (shark) with a single pore opening into the spiracle.
(2) Therefore the interneurones have reciprocal effects on the antagonistic motoneurones of the spiracles.
(3) The spiracular organ is a lateral line derived receptor associated with the first gill cleft (spiracle).
(4) The LKIR neurons in the abdominal ganglia form efferent axons supplying the lateral cardiac nerves, spiracles, and the segmental perivisceral organs.
(5) During the process of emergence this gas moves into the exuvial space through the adult spiracles and then follows the exuvial fluid into the alimentary canal.
(6) Three Drosophila genes have been identified that are important in controlling the development of the head, two of which, empty spiracles and orthodenticle, have been cloned and shown to contain a homeobox.
(7) The second stage is sensitive to 31 degrees and coincides with the period of black rings formation on anterior spiracles in the 3rd laval instar.
(8) The final model which includes both tympana and spiracles is able to simulate both the hearing directionality and, in part, the frequency selectivity of the system.
(9) The reduced spiracles play little or no role in gill ventilation.
(10) Spiracles of insects open in high carbon dioxide tensions and close in high oxygen tensions.
(11) Rickettsiae-like structures were found in the salivary gland cells of Drosophila auraria during different larval and prepupal developmental stages, from the early 3rd instar up to 14 hr after spiracle inversion.
(12) The closer muscles of the left and the right spiracles of a thoracic segment are both innervated by two motoneurones, which spike in a variety of patterns during expiration.
(13) The closer motoneurones of each thoracic spiracle whose somata are in the pro-, meso- or metathoracic ganglia all receive the same excitatory synaptic inputs.
(14) They influence three aspects of ventilation; (a) the closing and opening movements of the thoracic spiracles, (b) some aspects of abdominal pumping movements and (c) the recruitment of some motoneurones controlling head pumping.
(15) We report here that three previously identified zygotic genes buttonhead (btd), empty spiracles (ems) and orthodenticle (otd) may behave like gap genes that mediate bcd function in the embryonic head.
(16) The dominant oscillator overrides local oscillators in the abdominal ganglia and thus sets the rhythm for the entire abdomen, and it also controls spiracle opening and closing in several thoracic and abdominal segments.
(17) Posterior spiracles of newly hatched first instar larvae of Hypoderma bovis (L.) and H. lineatum (DeVill.)
(18) The empty spiracles (ems) gene of Drosophila melanogaster is necessary for proper head formation and the development of the posterior spiracles.
(19) Despite this, the spiracles of one segment may remain shut while those on other segments continue to open and close rhythmically.
(20) We show that two genes, lines and empty spiracles, act downstream of tailless to repress central and promote terminal cell fates along the anteroposterior axis of the termini.