| AEROPAUSE | • aeropause n. The region of the atmosphere above which it is not possible for aircraft to fly. • AEROPAUSE n. the region of the earth's atmosphere above which aircraft cannot fly. |
| APATOSAUR | • apatosaur n. A large, herbivorous, gregarious sauropod dinosaur, of the genus Apatosaurus, from Jurassic North America;… • APATOSAUR n. a kind of long-necked dinosaur, also APATOSAURUS. |
| APETALOUS | • apetalous adj. (Botany) Having no petals. • APETALOUS adj. having no petals, or flower leaves. |
| APIACEOUS | • apiaceous adj. (Botany) Of or relating to the family Apiaceae, including the carrots. • APIACEOUS adj. parsley-like. |
| APOGAMOUS | • apogamous adj. Relating to apogamy. • APOGAMOUS adj. engaging in apogamy, asexual reproduction. |
| ASEPALOUS | • asepalous adj. (Botany) Without sepals. • ASEPALOUS adj. without sepals. |
| AUTOCARPS | • AUTOCARP n. a fruit produced by self-fertilization. |
| AUTOHARPS | • autoharps n. Plural of autoharp. • AUTOHARP n. (tradename) a zither with a keyboard chord-making mechanism which mutes unwanted strings. |
| AUTOPISTA | • autopista n. A controlled-access highway in various Spanish-speaking countries. • AUTOPISTA n. (Spanish) a motorway. |
| AUTOPSIAS | • AUTOPSIA n. a postmortem examination of a corpse, also AUTOPSY. |
| CAPACIOUS | • capacious adj. Having a lot of space inside; roomy. • CAPACIOUS adj. roomy. |
| PADUASOYS | • paduasoys n. Plural of paduasoy. • PADUASOY n. (French) corded silk; a garment of this. |
| PALLADOUS | • palladous adj. (Inorganic chemistry) Relating to palladium with an oxidation number of 2. • PALLADOUS adj. containing palladium, a metallic element resembling platinum. |
| PARAMOURS | • paramours n. Plural of paramour. • PARAMOUR n. a lover of either sex, formerly in an innocent, now usually in the illicit, sense. |
| PAROUSIAS | • PAROUSIA n. (Greek) a coming, esp. the second coming of Christ. |
| POSTULATA | • postulata n. Plural of postulatum. • POSTULATUM n. (Latin) a postulate. |
| RAPACIOUS | • rapacious adj. (Also figurative) Voracious; avaricious. • rapacious adj. Given to taking by force or plundering; aggressively greedy. • rapacious adj. (Of an animal, usually a bird) Subsisting off live prey. |
| TAPACULOS | • tapaculos n. Plural of tapaculo. • TAPACULO n. (Spanish) a small South American bird, also TAPACOLO. |