Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The study of the forms of life existing in prehistoric or geologic times, as represented by the fossils of plants, animals, and other organisms.

from The Century Dictionary.

  • noun The science of the former life of the globe; the study of the life of former geologic periods; that branch of biology which treats of fossil organisms, and especially of fossil animals; paleozoölogy and paleobotany. Also called oryctozoölogy.

from the GNU version of the Collaborative International Dictionary of English.

  • noun The science which treats of the ancient life of the earth, or of fossils which are the remains of such life.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun Study of the forms of life existing in prehistoric or geologic times, especially as represented by fossils.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the earth science that studies fossil organisms and related remains

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

paleo- (“ancient”) + onto- (“being”) + -logy (“study”)

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