| AUTOCHTHONY | • autochthony n. An aboriginal condition or state. • AUTOCHTHONY n. the state of being aboriginal. |
| HETEROPHONY | • heterophony n. (Music) The simultaneous performance by a number of singers or musicians of two or more versions of the same melody. • HETEROPHONY n. an independent variation on a single melody by two or more voices. |
| HONEYMONTHS | • honey-months n. Plural of honey-month. • HONEYMONTH v. (obsolete) to spend one's honeymoon, also HONEYMOON. |
| HOYDENHOODS | • HOYDENHOOD n. the state of being a hoyden. |
| HYDROPHONES | • hydrophones n. Plural of hydrophone. • HYDROPHONE n. an apparatus for listening to sounds conveyed by water. |
| HYDROPHYTON | • hydrophyton n. (Biology) A branched structure that supports the zooids in colonial hydrozoa. • HYDROPHYTON n. the coenosarc of a hydroid colony. |
| HYMENOPHORE | • hymenophore n. (Mycology) The part of a fungus fruiting body which produces spore-bearing cells. • HYMENOPHORE n. the fruiting body of some basidiomycetous fungi. |
| HYPNOPHOBIA | • hypnophobia n. The fear of falling asleep. • HYPNOPHOBIA n. an irrational fear of sleep. |
| ONYCHOPHAGY | • onychophagy n. The habit of biting one’s nails. • ONYCHOPHAGY n. the habit of biting one's fingernails. |
| ORTHOGNATHY | • orthognathy n. The condition of being orthognathous. • ORTHOGNATHY n. the state of having normally aligned jaws. |
| PHONOGRAPHY | • phonography n. The transcription of speech using symbols. • phonography n. A form of shorthand using such symbols. • phonography n. (Dated) The art of constructing, or using, the phonograph. |
| RHYNCHOCOEL | • rhynchocoel n. A nemertean worm of the former phylum Rhynchocoela. • rhynchocoel n. A tubular cavity, in such worms and other organisms, enclosing a proboscis. • RHYNCHOCOEL n. the cavity in which the proboscis of a nemertine lies. |
| RHYNCHODONT | • RHYNCHODONT adj. having a toothed beak. |