Tressa is a female given name, a variant of Theresa, a name of uncertain etymology. It could be derived from Greek theros meaning “summer; harvest, crop; heat” or from Greek therizo meaning “to reap, cut”. It could also possibly be related to Greek ther meaning “wild beast; beast of prey” or Greek thēráō “to hunt”. Tressa is also a Cornish female name which comes from a word meaning “third”. Tressa is also a word in French, the third-person singular of tresser meaning “to plait, braid”, the same source the English word tress comes from.
Origin: Proto-Indo-European, Cornish