Rhombogene :: Rhombogene (n.) A dicyemid which produces infusorialike embryos; -- opposed to nematogene. See Dicyemata.
Rhombohedral :: Rhombohedral (a.) Related to the rhombohedron; presenting the form of a rhombohedron, or a form derivable from a rhombohedron; relating to a system of forms including the rhombohedron and scalenohedron..
Rhombohedron :: Rhombohedron (n.) A solid contained by six rhomboids; a parallelopiped.
Rhomboid :: Rhomboid (n.) An oblique-angled parallelogram like a rhomb, but having only the opposite sides equal, the length and with being different..