noun
object type
Technical computing term used in object-oriented programming or data modeling to classify objects.
このシステムでは、対象体種別ごとに異なる処理が行われる。
In this system, different processing is performed for each object type.
Compound of 対象体 (object entity) and 種別 (classification, type). The exact derivation is uncertain; it appears to be a technical term formed within computing contexts.