• adjective
• synonym
• antonym

• Glacial epoch (noun)
  1. from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution
• glacial acetic acid (noun)
  1. organic chemistry acetic acid that is at least 99.8% pure and tends to crystalize on cold days
• glacial boulder (noun)
  1. a boulder that has been carried by a glacier to a place far distant from its place of origin
• glacial epoch (noun)
  1. any period of time during which glaciers covered a large part of the earth's surface
• glacial period (noun)
  1. any period of time during which glaciers covered a large part of the earth's surface
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