hydr-

hydr-
combining form or hydro-
Etymology: alteration (influenced by Latin hydr-, hydro-) of Middle English ydr-, ydro-, from Old French ydr- & Middle French ydro-, from Latin hydr-, hydro-, from Greek, from hydōr — more at water
1.
a. : water

hydroelectricity

hydropress

2. : water-loving organism — chiefly in generic names

Hydracarina

Hydrodictyon

3.
a. : hydrogen : containing hydrogen

hydriodic acid

hydroborate

b. now usually hydro- : combined with hydrogen — especially in names of organic compounds

hydroquinidine

c. : combined with water by hydration

hydracrylic acid

or by hydrolysis

hydrocellulose

4. : characterized by an accumulation of fluid in a (specified) bodily part

hydronephrosis

5.
a. : combined with water — in names of minerals

hydrohetaerolite

b. : characterized by addition of water or its constituents — in names of varieties of minerals

hydromica

6. [New Latin, from Hydra (genus of polyps)] : hydroid

hydromedusa

hydrorhiza

* * *

hydr-1
var. of hydro-1 before a vowel: hydrant.
hydr-2
var. of hydro-2 before a vowel: hydride.

* * *

hydr-,
combining form. the form of hydro- (Cf.hydro-) before vowels, as in hydrant.

* * *

comb. form variant spelling of hydro- shortened before a vowel (as in hydraulic)

* * *

hydr-
the usual form of hydro- bef. a vowel.

Useful english dictionary. 2012.

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Look at other dictionaries:

  • hydr- — hydr(o) , hydre 1 ♦ Éléments, du gr. hudôr « eau ». 2 ♦ Chim. HYDR(O) : élément indiquant la présence d hydrogène. hydro , hydr , hydre. éléments, du gr. hudôr, eau . || CHIM Hydro : élément indiquant une combinaison de l hydrogène avec un autre… …   Encyclopédie Universelle

  • hydr- — Hydr [griech hýdo̅r = Wasser]: Bestimmungswort von Zus. mit den Bed. »Wasser, Feuchtigkeit, wässrig«, z. B. Hydrat, Hydrogel, hydrophil, Isohydrie, Hydrogen (↑ hydro ). Vgl. hygro . * * * hy|d|r , Hy|d|r : ↑ hydro , Hydro . * * * hydr , Hydr : ↑ …   Universal-Lexikon

  • Hydr- — Hydr [griech hýdo̅r = Wasser]: Bestimmungswort von Zus. mit den Bed. »Wasser, Feuchtigkeit, wässrig«, z. B. Hydrat, Hydrogel, hydrophil, Isohydrie, Hydrogen (↑ hydro ). Vgl. hygro . * * * hy|d|r , Hy|d|r : ↑ hydro , Hydro . * * * hydr , Hydr : ↑ …   Universal-Lexikon

  • hydr- — 1 var. of hydro 1 before a vowel: hydrant. hydr 2 var. of hydro 2 before a vowel: hydride. * * * …   Universalium

  • hydr... — hydr..., Hydr... ↑ hydro..., ↑ Hydro …   Das Herkunftswörterbuch

  • Hydr... — hydr..., Hydr... ↑ hydro..., ↑ Hydro …   Das Herkunftswörterbuch

  • Hydr- — Hy dr See under {Hydro }. [1913 Webster] …   The Collaborative International Dictionary of English

  • hydr- — ou hydro préfixe Préfixe, du grec, eau ; comparez le latin udor, humidité, udus, humide ; sanscr. udan. Comparez aussi le sanscrit an udra, anhydre, unadmi, undami ( avec un a long), mouiller, et le lat. unda, onde ; la racine est ud, ou, en… …   Dictionnaire de la Langue Française d'Émile Littré

  • hydr- — combining form HYDRO : used before a vowel …   English World dictionary

  • Hydr- — Hydro Hy dro , Hydr Hy dr 1. A combining form from Gr. ?, ?, water (see {Hydra}). [1913 Webster] 2. (Chem.) A combining form of hydrogen, indicating hydrogen as an ingredient, as hydrochloric; or a reduction product obtained by hydrogen, as… …   The Collaborative International Dictionary of English

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