• (a.) Having a form somewhat like leptus; -- said of active insect larvae having three pairs of legs. See Larva.
Lep'ti·form (-tĭ*fôrm) adjective [ Leptus + -form .] (Zoology) Having a form somewhat like leptus; -- said of active insect larvæ having three pairs of legs. See Larva . 
leptiform Having a form somewhat like leptus; said of active insect larvae having three pairs of legs.