Search Result for "proterozoic": 
Wordnet 3.0

NOUN (1)

1. from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms;
[syn: Proterozoic, Proterozoic eon, Proterozoic aeon]


ADJECTIVE (1)

1. formed in the later of two divisions of the Precambrian era;
- Example: "proterozoic life forms"



WordNet (r) 3.0 (2006):

proterozoic
    adj 1: formed in the later of two divisions of the Precambrian
           era; "proterozoic life forms"
    n 1: from 2,500 to 544 million years ago; bacteria and fungi;
         primitive multicellular organisms [syn: Proterozoic,
         Proterozoic eon, Proterozoic aeon]