ge·ne·al·o·gy

[jee-nee-ol-uh-jee, -al-, jen-ee-]
noun, plural ge·ne·al·o·gies.
1.
a record or account of the ancestry and descent of a person, family, group, etc.
2.
the study of family ancestries and histories.
3.
descent from an original form or progenitor; lineage; ancestry.
4.
Biology. a group of individuals or species having a common ancestry: The various species of Darwin's finches form a closely knit genealogy.
Origin:
1250–1300; Middle English genealogie < Middle French < Late Latin geneālogia < Greek geneālogía pedigree, equivalent to geneā́ race (see gene) + -logia -logy

Related forms
ge·ne·a·log·i·cal [jee-nee-uh-loj-i-kuhl, jen-ee-] , ge·ne·a·log·ic, adjective
ge·ne·a·log·i·cal·ly, adverb
ge·ne·al·o·gist, noun
non·ge·ne·a·log·ic, adjective
non·ge·ne·a·log·i·cal, adjective
non·ge·ne·a·log·i·cal·ly, adverb

Synonyms
1. See pedigree.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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a wistful desire to return in thought or in fact to a former time in one's life, to one's home or homeland, or to one's family and friends; a sentimental yearning for the happiness of a former place or time:
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Collins
World English Dictionary
genealogy (ˌdʒiːnɪˈælədʒɪ) [Click for IPA pronunciation guide]
 
—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]
 
genealogical
 
—adj
 
genea'logic
 
—adj
 
genea'logically
 
—adv
 
gene'alogist
 
—n

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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Etymonline
Word Origin & History

genealogy
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-)
n.

  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
The result is an elaborate human genealogy, an intricately branching tree of
  genetic alterations.
Inexpensive genetic testing is turning the once-staid pursuit of genealogy into
  an extreme sport.
Icelanders are also known for their passion for genealogy.
Wish I knew more about his genealogy.
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