geologic time

/ˈdʒiəˌlɑdʒɪk taɪm/

Other forms: geologic times

Definitions of geologic time

1. noun

   the time of the physical formation and development of the earth (especially prior to human history)
   synonyms: geological time

   types:

   aeon, eon

   the longest division of geological time

   geological period, period

   a unit of geological time during which a system of rocks formed

   era, geological era

   a major division of geological time; an era is usually divided into two or more periods

   epoch

   a unit of geological time that is a subdivision of a period and is itself divided into ages

   glacial epoch, glacial period, ice age

   any period of time during which glaciers covered a large part of the earth's surface

   type of:

   time

   the continuum of experience in which events pass from the future through the present to the past