We found 28 dictionaries that define the word
optional:
General (23 matching dictionaries)
- optional: Merriam-Webster.com
- optional: Oxford Learner's Dictionaries
- optional: American Heritage Dictionary of the English Language
- optional: Collins English Dictionary
- optional: Vocabulary.com
- Optional, optional: Wordnik
- optional: Cambridge Advanced Learner's Dictionary
- optional: Wiktionary
- optional: Webster's New World College Dictionary, 4th Ed.
- optional: The Wordsmyth English Dictionary-Thesaurus
- optional: Infoplease Dictionary
- Optional, optional: Dictionary.com
- optional: Cambridge Essential American English Dictionary
- Optional: Online Plain Text English Dictionary
- optional: Webster's Revised Unabridged, 1913 Edition
- optional: Rhymezone
- optional, optional: AllWords.com Multi-Lingual Dictionary
- optional: Webster's 1828 Dictionary
- optional: Free Dictionary
- optional: Mnemonic Dictionary
- optional: Dictionary/thesaurus
Art (1 matching dictionary)
- ODLIS: Online Dictionary of Library and Information Science (No longer online)
Business (2 matching dictionaries)
- Travel Industry Dictionary (No longer online)
- optional: Legal dictionary
Science (1 matching dictionary)
- optional: PlanetMath Encyclopedia
Slang (1 matching dictionary)
- optional: Urban Dictionary
(Note: See
optionality as well.)
▸ adjective: Not compulsory; left to personal choice; elective.
▸ noun: Something that is not compulsory, especially part of an academic course.
▸ noun: (programming, sometimes capitalized) In various programming languages, a kind of variable that is assigned a specific data type but may or may not hold an actual value.
ex gratia,
elective,
facultative,
nonobligatory,
nonmandatory,
nonelective,
uncompulsory,
noncompulsory,
nonoptional,
unobligatory,
more...
applicable,
type,
name,
size,
external,
key,
file,
true,
metric,
due,
value
▸ Words similar to optional
▸ Usage examples for optional
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▸ Popular nouns described by optional
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▸ Rhymes of optional
▸ Invented words related to optional
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