Third-person singular simple present indicative form of commence.(verb)
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Use "commences" in a sentence
"The officer is allowed his salary from that date, upon the principle that the commission is a grant of the office, and the title commences with the date of the grant."
""The term commences next week," explained my father."
"No date has been set for the appeal, but it is expected to be heard when the Supreme Court of Appeal's third term commences in"