| ACARIDS | • acarids n. Plural of acarid. • ACARID n. a member of the mite or tick family, also ACARIDAN, ACARINE, ACARUS. |
| ACRASIA | • acrasia n. Lack of self-control; excess; intemperance. • ACRASIA n. (Greek) a loss of self control. |
| ACRASIN | • acrasin n. A chemotactic agent produced by some slime moulds. • ACRASIN n. a substance secreted by a slime mould. |
| AGARICS | • agarics n. Plural of agaric. • AGARIC n. a kind of fungus. |
| AIRVACS | • AIRVAC n. evacuation by air ambulance. |
| ARACHIS | • Arachis prop.n. A taxonomic genus within the family Fabaceae – flowering plants, of which the peanut is the best known. • ARACHIS n. (Greek) a Brazilian plant genus that includes monkey-nut. |
| ARNICAS | • arnicas n. Plural of arnica. • ARNICA n. a tincture obtained from mountain tobacco used for bruises, sprains etc. |
| ASCARID | • ascarid n. Any phasmid nematode of the family Ascarididae (Ascaridae). • ASCARID n. any nematode worm of the parasitic genus Ascaris, infesting the small intestines, also ASCARIS. |
| ASCARIS | • Ascaris prop.n. A taxonomic genus within the family Ascarididae – intestinal roundworms affecting pigs and humans. • ASCARIS n. (Greek) any nematode worm of the parasitic genus Ascaris, infesting the small intestines, also ASCARID. |
| CARDIAS | • cardias n. Plural of cardia. • CARDIA n. (Greek) an opening of the esophagus. |
| CARINAS | • carinas n. Plural of carina. • CARINA n. (Latin) a keel-shaped ridge on a bird's breast. |
| CARITAS | • CARITAS n. (Latin) love for all people. |
| CAVIARS | • caviars n. Plural of caviar. • CAVIAR n. the roe of sturgeon, also CAVIARE, CAVIARIE, CAVIER. |
| PICARAS | • picaras n. Plural of picara. • PICARA n. (Spanish) a (female) rogue. |
| SARCINA | • Sarcina prop.n. A taxonomic genus within the family Clostridiaceae – cocci-shaped bacteria that fail to dissociate during… • SARCINA n. a spherical bacterium. |