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heterogeneous made up of parts or members that differ from each other. (Cf. homogeneous.) [2 definitions]
heterogynous having two kinds of females, one capable of reproduction and the other not, as ants and bees.
heteronym a word that is spelled the same as another but has a different pronunciation and meaning, such as "tear," meaning "to rip," and "tear," meaning the liquid discharge from the eye.
heteroplasty plastic surgery that uses grafts of tissue from another individual or species.
heterosexual sexually attracted only to those of the opposite sex. [3 definitions]
heterozygote an organism that has two variants of a particular gene.
heterozygous pertaining to an organism that has two variants of a particular gene.
heth the name of the eighth letter of the Hebrew alphabet.
hetman a leader or chief of a band or group of Cossacks; ataman.
heuristic of, pertaining to, or consisting of education derived from empirical study and practical experience. [3 definitions]
hew to cut off or cut down with, or as though with, an ax. [4 definitions]
hex to put a spell or curse on, by means of witchcraft; put a hex on. [2 definitions]
hexa- six.
hexachlorophene a white, nearly odorless powder used in medicine and cosmetics to inhibit or eliminate bacteria.
hexadecimal a number system with 16 as a base.
hexagon a flat closed figure with six sides.
hexagonal of, pertaining to, or being a six-sided figure.
hexagram a starlike figure with six points made by superimposing two equilateral triangles such that each side of one triangle intersects one side and is parallel to another side of the other triangle. [2 definitions]
hexahedron a polyhedron or solid object having six flat faces.
hexameter a line of poetry with six metrical units or feet.
hexapod any insect. [2 definitions]