Definition 2023





-aceae f pl

  1. (taxonomy) Used to form the name of taxonomic families of plants, algae, bacteria, and fungi

Usage notes

  • In English, family names ending in -aceae are usually treated as plural (e.g., "Cunoniaceae are" or "the Cunoniaceae family is").
  • In English, most family names ending in -aceae follow the pronunciation pattern of /ˈeɪsi, -siˌaɪ, -siˌeɪ, -siˌi/) (e.g., Solanaceae, /ˌsoʊləˈneɪsi/).
  • There are only eight exceptions to the rule of using the -aceae termination for taxonomic families under the International Code of Nomenclature for algae, fungi, and plants (Melbourne Code, 2011). Each also has an accepted alternative (nomen alternativum), given in brackets:

Derived terms

<a class='CategoryTreeLabel CategoryTreeLabelNs14 CategoryTreeLabelCategory' href='/wiki/Category:Translingual_words_suffixed_with_-aceae'>Translingual words suffixed with -aceae</a>

See also

  • -idae (the equivalent for animals)





  1. nominative feminine plural of -āceus
  2. genitive feminine singular of -āceus
  3. dative feminine singular of -āceus
  4. vocative feminine plural of -āceus