different between univalve vs undefined

English

Etymology

Originated 1655–65 from uni- (“one”) +? valve.

Adjective

univalve (not comparable)

1. having one valve; typically used to refer to mollusks, notably slugs and snails.
2. consisting of a single valve or piece, used to refer to a shell.

Translations

Noun

univalve (plural univalves)

1. A univalve mollusk or its shell.

Usage notes

The term univalve is now considered outdated in scientific classification, and the term gastropod is preferred.

Synonyms

• gastropod

Coordinate terms

• bivalve

Related terms

• bivalve

Translations

References

• “univalve”, in The American Heritage Dictionary of the English Language, 4th edition, Boston, Mass.: Houghton Mifflin, 2000, ?ISBN
• “univalve” in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.
• "univalve" in WordNet 2.0, Princeton University, 2003.

English

Etymology

un- +? defined

Adjective

undefined (not comparable)

1. Lacking a definition or value.
2. (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.

   The result of division by zero is undefined.

Synonyms

• (lacking a definition or value): indefinite, undefinable; see also Thesaurus:indistinct or Thesaurus:vague

Antonyms

• defined

Translations