Simple past tense and past participle of approximate.(verb)
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Use "approximated" in a sentence
"Our course grades would be determined primarily by how closely our team's contract terms approximated those of actual recent collective bargaining agreements."
"Impatience and a hint of what lay beneath his bland exterior lent an ugly edge to tr'Annhwi's words before he recovered himself and twisted his mouth into an expression that approximated a smile."
"Thus, the reactions to Socialism were largely focused on its oddities: young children on a boat who speak in abstract aphorisms, other shots narrated by zoo animals — all of which would be easier to comprehend if they were subtitled in full, instead of "approximated" in what Godard calls the fragmented "Navajo English" of old Westerns."