geniculate, geniculating, geniculated 1. Bent at an angle like a knee; such as, geniculate antennae. 2. With a joint or joints that can be bent like a knee. 3. Bent abruptly, as a knee. 4. Having kneelike joints; able to bend at an abrupt angle. Found on http://www.wordinfo.info/words/index/info/view_unit/897/