Definitions

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

  • noun Biology A taxonomic category of related organisms ranking below a family and above a genus.
  • noun Linguistics A division of languages below a family and above a branch.

from The Century Dictionary.

  • noun In zoology, the first subdivision of a family, containing several genera or only one genus.

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

  • noun (Biol.) One of the subdivisions, of more importance than genus, into which certain families are divided.

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

  • noun taxonomy A taxonomic category ranking between a family and a genus; formerly called a tribe

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

  • noun (biology) a taxonomic category below a family

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

sub- +‎ family

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Examples

  • On the origins of Hippopotamidae together with descriptions of two species, a new genus and a new subfamily from the Miocene of Kenya.

    More on what I saw at the zoo Darren Naish 2006

  • In the era immediately following World War II, the subfamily was a convenient startup arrangement for young couples newly married and as a residential arrangement for an elderly dependent parent in the home of a son or daughter.

    The Population of the United States Douglas L. Anderton 1997

  • Most cool season cereal, forage and turf grasses belong to the Pooideae subfamily, which is also the largest grass subfamily.

    Naturejobs - All Jobs 2010

  • This 'subfamily' is a critical area of family life all around the world, regardless of cultural influence.

    PRWeb - Daily News Feed 2010

  • This month, IF Editor Cat Wayland talks about the "subfamily" of siblings in her newly launched IF mag blog.

    PRWeb - Daily News Feed 2010

  • Most of the languages of this subfamily straddle the border between Chiapas and Guatemala.

    Campeche: on the edge of the Maya world 2009

  • According to Ethnologue. com, the Chol belong to the Chol-Chontal subfamily of the Maya Linguistic Group.

    Campeche: on the edge of the Maya world 2009

  • The dung beetle subfamily Scarabaeinae is a cosmopolitan group of insects that feed primarily on dung.

    Archive 2009-01-01 2009

  • Most of the languages of this subfamily straddle the border between Chiapas and Guatemala.

    Campeche: on the edge of the Maya world 2009

  • According to Ethnologue. com, the Chol belong to the Chol-Chontal subfamily of the Maya Linguistic Group.

    Campeche: on the edge of the Maya world 2009

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