External: belonging to or on the outside.
External area: Hymenoptera; the upper of the three cells or areas of the metanotum, between the median and lateral longitudinal carina, first lateral basal area.
External median area: Hymenoptera; the median of the three cells or areas between the median and lateral longitudinal carinae: = second lateral area.
Externomedial vein: in Hymenoptera (Norton) = radius (Comst.); in Orthoptera, = media (Comst.).
Externo-median nerve: the humeral and discoidal veins together.
Extra-ocular: remote from or beyond the eyes.
Extremity: the point most remote from base.
Extrorse -um: toward the outside.
Extrude: to turn or force out.
Exude: to ooze or flow slowly through minute openings.