Definition of "dimidiate" []

• Divided into two (equal) halves (adjective)
• To divide into two (verb)

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• "The terminal cell is always solitary, very often attached to the one next it, which is generally single, obliquely placed, occasionally looking like the dimidiate calyptra capping a young seta."
• "The shape of the fungus is peculiar, a sort of semi-circular outline that may be called dimidiate."
• "In some it is central and grows on the ground, in others it is lateral, and the cap is semicircular (dimidiate), and others again have no stem."