IPA: /ˈkoʊtaɪp/
KK: /ˈkoʊtaɪp/
In zoology, a specimen that is used to help define a new species, often one of several that provide important characteristics for classification.
The scientist examined the cotype to better understand the new species' features.
Cotype is formed from "co-" (meaning together) and "type" (from Greek "typos", meaning a model or impression). The word refers to a specimen that is part of a set of specimens that are used to define a particular species or group, thus indicating a type that is shared or together with others.
Think of 'together' ('co-') and a 'model' or 'impression' ('type') to remember that a cotype is a specimen that is part of a group defining a species.