once

/wɒn(t)s/

adverb

(frequency) One and only one time.
"I have only once eaten pizza."
(temporal location) Formerly; during some period in the past.
"He was once the most handsome man around."
Multiplied by one: indicating that a number is multiplied by one.
"Once three is three."

conjunction

As soon as; when; after.
"Once he is married, he will be able to claim the inheritance."

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