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optional - 3 dictionary results
Option
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op⋅tion⋅al

  [op-shuh-nl]
Use optional in a Sentence
–adjective
1. left to one's choice; not required or mandatory: Formal dress is optional.
2. leaving something to choice.
Origin:
1755–65; option + -al 1

Related forms:
op⋅tion⋅al⋅i⋅ty, noun
op⋅tion⋅al⋅ly, adverb

Synonyms:
1. discretional, elective, voluntary.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To optional
op·tion·al   (ŏp'shə-nəl)   
adj.  Left to choice; not compulsory or automatic.
op'tion·al·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Optional

Op"tion*al\, a. Involving an option; depending on the exercise of an option; left to one's discretion or choice; not compulsory; as, optional studies; it is optional with you to go or stay. -- n. See Elective, n.

If to the former the movement was not optional, it was the same that the latter chose when it was optional. --Palfrey.

Original writs are either optional or peremptory. --Blackstone.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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Language Translation for : optional
Spanish: opcional,
German: frei wählbar,
Japanese: 任意の
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Option
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