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English

anostraca

|a-nos-tra-ca|

C2

🇺🇸

/əˈnɑːstrəkə/

🇬🇧

/əˈnɒstrəkə/

shell-less small freshwater shrimp group

Etymology
Etymology Information

'anostraca' originates from New Latin, ultimately from Greek 'anostrakon', where 'an-' meant 'without' and 'ostrakon' meant 'shell' (or 'shell-like plate').

Historical Evolution

'anostraca' derived from the Greek word 'anostrakon' and passed into New Latin/modern taxonomic usage as 'Anostraca', becoming the standard name for the order of fairy shrimp in scientific classification.

Meaning Changes

Initially it referred to 'without a shell' (describing the lack of a bivalved carapace); over time it came to denote specifically the taxonomic group (the order of fairy shrimp).

Meanings by Part of Speech

Noun 1

a taxonomic order (Anostraca) of small, mostly freshwater branchiopod crustaceans commonly called fairy shrimp; characterized by the absence of a bivalved carapace.

Anostraca are often found in temporary freshwater pools and vernal ponds.

Synonyms

Noun 2

members of the order Anostraca considered collectively (the small swimming crustaceans themselves).

Researchers studied the life cycles of several anostraca from seasonal ponds.

Synonyms

Last updated: 2025/08/19 11:37