Abscissus: cut off squarely, with a straight margin.
Absconditus: hidden, concealed; retracted into another.
Acalyptrata: those muscid flies in which alulae are absent or rudimentary.
Acanthus: a spine, spur or prickle.
Acaudal -ate: without a tail.
Accessory: added, or in addition to.
Accessory carinae: in Orthoptera the lateral carinae of the face.
Accessory cell: a cell not commonly present in the group; in some orders of definite location as, e.g. in Lepidoptera, usually a small cell at the end of the subcosta, giving rise directly or indirectly to veins 7 to 10:= 1st radius 2 (Comst.); = areole.
Accessory glands: any glands opening into the ducts of the reproductive system.
Accessory sac: a glandular structure of the female reproductive system containing a sticky secretion.