genealogy

Concise Oxford English Dictionary © 2008 Oxford University Press:
genealogy /dʒiːnɪˈalədʒi, dʒɛn-/

▶noun (pl. genealogies)

• 1 a line of descent traced continuously from an ancestor.

• 2 the study of lines of descent.

– derivatives
genealogical /ˌdʒiːnɪəˈlɒdʒɪk(ə)l, ˌdʒɛn-/ adjective,
genealogically adverb,
genealogist noun,
genealogize (or genealogise) verb.

– origin ME: via OFr. and late L. from Gk genealogia, from genea ‘race, generation’ + -logia (see -logy).