| 释义 |
meta·the·ria
\ˌ ̷ ̷ ̷ ̷ˈthirēə\ noun plural
Usage: capitalized
Etymology: New Latin, from meta- + -theria
1. : a hypothetical group ancestral to placental mammals postulated to have reached a stage of development equivalent to that of the marsupials
2. in some classifications : a group coextensive with Marsupialia |