[jee-nee-ol-uh-jee, -al-, jen-ee-]
noun, plural genealogies.
a record or account of the ancestry and descent of a person, family, group, etc.
the study of family ancestries and histories.
descent from an original form or progenitor; lineage; ancestry.
Biology. a group of individuals or species having a common ancestry: The various species of Darwin's finches form a closely knit genealogy.

1250–1300; Middle English genealogie < Middle French < Late Latin geneālogia < Greek geneālogía pedigree, equivalent to geneā́ race (see gene) + -logia -logy

genealogical [jee-nee-uh-loj-i-kuhl, jen-ee-] , genealogic, adjective
genealogically, adverb
genealogist, noun
nongenealogic, adjective
nongenealogical, adjective
nongenealogically, adverb

1. See pedigree. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
genealogy (ˌdʒiːnɪˈælədʒɪ)
n , pl -gies
1.  the direct descent of an individual or group from an ancestor
2.  the study of the evolutionary development of animals and plants from earlier forms
3.  a chart showing the relationships and descent of an individual, group, genes, etc
[C13: from Old French genealogie, from Late Latin geneālogia, from Greek, from genea race]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

c.1300, from O.Fr. genealogie, from L.L. genealogia "tracing of a family," from Gk. genealogia, from genea "generation, descent" (see genus) + logos "student of."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

genealogy ge·ne·al·o·gy (jē'nē-ŏl'ə-jē, -āl'-, jěn'ē-)

  1. A record or table of the descent of a person, family, or group from an ancestor or ancestors; a family tree.

  2. The study or investigation of ancestry and family histories.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
His approach to them was archaeological rather than strictly genealogical,
  discovering his family within himself.
Father retired some years ago to devote his days to genealogical research and
  quaint questions of heraldry.
That's why they had all this genealogical information.
If they pull this off it will be interesting, as they have lots of genealogical
  data and a small homogenous population.
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