assessionA sitting beside or near; especially as a participant in an official proceeding such as a meeting of an organization or a court case; an official membership or seat.
asseverationAn earnest affirmation; a declaration of support.
assibilateTo change into or pronounce with the accompaniment of a sibilant sound or sounds.
assidentOf a symptom, generally, but not always, accompanying a disease; indicative of the presence of a disease but not a necessary occurrence in conjunction with that disease.
attentatAnything whatsoever, as a ruling, by the judge of a lower court in a matter pending an appeal.
attenuantarchaic Making thin; diluting or thinning; rendering less dense and viscid.
attico-Epitympanic recess or the uppermost part of the middle ear cavity located above the tympanic membrane and containing the head of the malleus (hammer bone) and body of the incus (anvil bone).
attitudinarianOne who attitudinizes; one who postures or behaves in a stilted and pretentious manner.
attitudinizeTo cause (someone or something) to assume an attitude or pose; to pose, to posture.
attitudinousHaving a bold and possibly unfriendly attitude; sassy.
attollentLifting up, raising (said of muscles, especially the levator palpebrae superioris ).
audita querelaA writ which lies for a party against whom judgment is recovered, but to whom good matter of discharge has subsequently accrued which could not have been availed of to prevent such judgment.
aulacophoreA tail-like longitudinally differentiated appendage found in mitrates and cornutes, originally believed to be used for feeding, but now believed to be used for locomotion.
aula magnaA great hall or large classroom used for special occasions at a university.
australopithecineAny of several extinct hominids, belonging to the genera Australopithecus and Paranthropus in the subtribe Australopithecina when seen as distinct, and sometimes other closely related genera.