pro·to·hymenoptera \“+\noun plural Usage: capitalized Etymology: New Latin, from prot- + Hymenoptera in some classifications: an order of extinct insects known only from the Permian and now usually included in the order Megasecoptera • pro·to·hymenopteran\“+\adjective or noun • pro·to·hymenopteron\“+\noun • pro·to·hymenopterous\“+\adjective