| BACKDROPPING | • backdropping v. Present participle of backdrop. • BACKDROP v. to create a background for a stage. | 
| CHONDROPHORE | • chondrophore n. Any hydrozoan of the former order Chondrophora (now included in order Anthoathecata). • CHONDROPHORE n. a medusoid hydrozoan that resembles a jellyfish. | 
| DENDROPHISES | • DENDROPHIS n. a snake of the genus Dendrophis, a tree snake. | 
| EAVESDROPPED | • eavesdropped v. Simple past tense and past participle of eavesdrop. • EAVESDROP v. to listen in on a private conversation, also EAVESDRIP. | 
| EAVESDROPPER | • eavesdropper n. One who eavesdrops. • eavesdropper n. (Military, slang) A surveillance aircraft. • EAVESDROPPER n. one who eavesdrops. | 
| HYDROPATHICS | • hydropathics n. Plural of hydropathic. • HYDROPATHIC n. a hotel (with special baths, etc., and often situated near a spa) where guests can have hydropathic treatment. | 
| HYDROPATHIES | • hydropathies n. Plural of hydropathy. • HYDROPATHY n. the study of treating diseases with water. | 
| HYDROPATHIST | • hydropathist n. An expert in hydropathy. • HYDROPATHIST n. one who treats with hydropathy. | 
| HYDROPHANOUS | • hydrophanous adj. (Mineralogy) Made transparent by immersion in water. • HYDROPHANOUS adj. becoming transparent when placed in water. | 
| HYDROPHILIES | • HYDROPHILY n. an affinity for water. | 
| HYDROPHILITE | • hydrophilite n. (Mineralogy) A soft white mineral formed from anhydrous calcium chloride. • HYDROPHILITE n. native calcium chloride. | 
| HYDROPHILOUS | • hydrophilous adj. (Biology) That grows or thrives in or near water. • hydrophilous adj. (Botany) That is pollinated by water. • HYDROPHILOUS adj. water-loving; pollinated by agency of water. | 
| HYDROPHOBIAS | • hydrophobias n. Plural of hydrophobia. • HYDROPHOBIA n. the morbid fear of water, as in rabies victims. | 
| HYDROPHOBOUS | • hydrophobous adj. Hydrophobic. • HYDROPHOBOUS adj. (obsolete) water-repellent. | 
| HYDROPHYTONS | • HYDROPHYTON n. the coenosarc of a hydroid colony. | 
| HYDROPHYTOUS | • hydrophytous adj. Relating to hydrophytes. • hydrophytous adj. Relating to hydrophytons. • HYDROPHYTOUS adj. like a hydrophyte, also HYDROPHYTIC. | 
| HYDROPLANING | • hydroplaning v. Present participle of hydroplane. • hydroplaning n. (Automotive, US, Canada) The loss of contact with the road because of surface water. The act of aquaplaning. • HYDROPLANE v. to travel by hydroplane, a light, flat-bottomed motorboat. | 
| PARADROPPING | • paradropping v. Present participle of paradrop. • PARADROP v. to deliver by parachute. | 
| QUADROPHONIC | • quadrophonic adj. Alternative spelling of quadraphonic. • QUADROPHONIC adj. of, relating to, or using four channels for the transmission, recording, or reproduction of sound, also QUADRAPHONIC, QUADRIPHONIC. |