noun
A primitive primate belonging to the extinct family Plesiadapidae, known from Palaeocene fossil remains found in North America and Europe.
adjective
Of or relating to the family Plesiadapidae.
Origin
1930s; earliest use found in Science. From scientific Latin Plesiadapis, genus name + -id, after scientific Latin Plesiadapidae, family name.
Are You Learning English? Here Are Our Top English Tips