sub·fam·i·ly

[suhb-fam-uh-lee, -fam-lee, suhb-fam-uh-lee, -fam-lee]
noun, plural sub·fam·i·lies.
1.
Biology. a category of related genera within a family.
2.
Linguistics. (in the classification of related languages within a family) a category of a higher order than a branch. Compare branch ( def 8 ), family ( def 14 ).

Origin:
1825–35; sub- + family

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
subfamily (ˈsʌbˌfæmɪlɪ) [Click for IPA pronunciation guide]
 
n , pl -lies
1.  biology a taxonomic group that is a subdivision of a family
2.  any analogous subdivision, as of a family of languages

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Subfamily is always a great word to know.
So is species. Does it mean:
an organism or cell capable of synthesizing all its metabolites from inorganic material, requiring no organic nutrients
the basic category of biological classification, composed of individuals that resemble one another are able to breed with one another
American Heritage
Medical Dictionary

subfamily sub·fam·i·ly (sŭb'fām'ə-lē)
n.
A taxonomic category ranking between a family and a genus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
subfamily   (sŭb'fām'ə-lē)  Pronunciation Key 
A subdivision of a family of organisms, containing one or more genera. The names of subfamilies in the animal kingdom typically end in -inae, as in Cerambycinae, a subfamily of the longhorn beetle family Cerambycidae.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
It was so odd he put it in its own genus, and even gave it its own subfamily.
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