Whether is defined as a word used to introduce an alternative.(conjunction)
An example of whether is what someone would say when asking her child if she would like vanilla or chocolate ice cream.
See whether in Webster's New World College Dictionary
Origin: ME < OE hwæther (akin to Ger weder, neither) < IE *kwotero-, which (of two) < base *kwo-, who (> what) + compar. suffix
See whether in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old English hwether; see kwo- in Indo-European roots.
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