(chemistry) Pertaining to a type of complex heterocyclic triazine related to melem. / Melon-like. / Squamosal. / Alternative form of melanic / (mathematics) Pertaining to a leading order graph.

(chemistry) the cation H₂As⁺ derived from arsine / (chemistry) any organic derivative of this cation

plural of catechist

(mathematics) Describing each of the two segments of the minor axis of a conic section at both sides of the center of the conic section.