Noun
primitive genus of termites; mostly extinct; sometimes considered the most primitive Isoptera
Source: WordNetThe modern term was first used in 1781. citation Taxonomy and evolution The external appearance of the giant northern termite Mastotermes darwiniensis is suggestive of the close relationship between termites and cockroaches. Source: Internet
The folded wings of the fossil wood roach Pycnoblattina, arranged in a convex pattern between segments 1a and 2a, resemble those seen in Mastotermes, the only living insect with the same pattern. Source: Internet