Webster's Revised Unabridged Dictionary · 1913

Coarctate

Coarctate , adjective

[Latin coarctatus, past participle of coarctare to press together; co- + arctare to press together, from arctus, p. p. See Arctation.]

(Zoology) Pressed together; closely connected; -- applied to insects having the abdomen separated from the thorax only by a constriction.
Collocations (1)
Coarctate pupa (Zoology) , a pupa closely covered by the old larval skin, as in most Diptera.