Although not identified, the name suggests that this involves the conjuring of inanimate objects.
References from the canon
- The fifth years were assigned homework about this by McGonagall at the very beginning of the school year (OP14). Since according to McGonagall Conjuring spells are usually not attempted until N.E.W.T. level, perhaps this assignment was preparatory theory work.
Magic Type Transfiguration
Incantation Inanimatus Conjurus
Pronunciation in-an-i-MAH-tus con-JUR-us
"inanimus-" L. not living + "coniurus" L. conjure