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quaternary

qua·ter·nar·y

quaternary

 
pronunciation:
kwa tr neI ri [or] kw tuhr n ri
parts of speech:
adjective, noun
features:
Word Combinations (adjective)
part of speech: adjective
definition 1: consisting of four, or grouped in fours.
definition 2: (cap.) of, relating to, or designating the latest geological period of the Cenozoic Era that includes the present and began approximately 1.8 million years ago, marked by widespread glaciers, the appearance of humans, and the development of human culture.
Word CombinationsSubscriber feature About this feature
 
part of speech: noun
inflections: quaternaries
definition 1: a group of four, or the fourth in such a group.
definition 2: (cap.) the Quaternary Period, or the rock formations that date from that time.