| hertz |
a unit of frequency equal to one cycle per second. (abbr.: Hz) |
| Hertzian wave |
an electromagnetic wave, such as a radio wave, produced when electricity is oscillated in a conductor. |
| Herzegovina |
see "Bosnia and Herzegovina." |
| he's |
contracted form of "he is," or contracted form of "he has." |
| Heshvan |
the second month of the Jewish lunisolar calendar, occurring from late October through early November in the Gregorian calendar. |
| hesitancy |
doubt, uncertainty, or indecision. |
| hesitant |
uncertain or in doubt; hesitating. |
| hesitantly |
with caution, uncertainty, or shyness. |
| hesitate |
to refrain momentarily from carrying out some action; pause in uncertainty. [2 definitions] |
| hesitation |
the act or state of hesitating. |
| Hessian |
any of the German mercenaries that served with the British during the American Revolution. |
| Hessian fly |
a small fly, the larvae of which infest and consume the stems of grasses, wheat, and other grain plants. |
| hetaera |
in ancient Greek society, a female paramour or concubine, often a member of a class of educated slaves or cultured companions. [2 definitions] |
| hetero- |
different; other. |
| heterocyclic |
of or involving chemical compounds whose molecules are rings of carbon atoms with at least one atom of another element. [2 definitions] |
| heterodox |
deviating from an officially approved belief or doctrine, esp. in religion. [2 definitions] |
| heterodoxy |
the fact or condition of being heterodox. [2 definitions] |
| heterodyne |
of or designating a merging or method of merging two frequencies such that the resulting frequency equals the sum of or difference between the two, often accomplished by the modification of an incoming signal by a receiver. [3 definitions] |
| heterogamete |
either of a pair of uniting gametes, such as an ovum or a sperm, that differs from its mate in size, structure, activity, sex, or the like. (Cf. isogamete.) |
| heterogamous |
characterized by having, or reproducing by the union of, unlike gametes. [3 definitions] |
| heterogeneity |
the quality or state of being made up of parts or members that differ from each other. |