| incomplete metamorphosis | The development of a nymph into the imago which in many respects resembles the former; characteristic of more primitive insect orders, such as Heteroptera (true bugs), Orthoptera (locusts, grasshoppers), and Blatterria (roaches). Synonym: heterometabolous metamorphosis. (05 Mar 2000) |
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| incomplete tetanus | Tetanus in which each stimulus causes a contraction to be initiated when the muscle has only partly relaxed from the previous contraction. (05 Mar 2000) |