Origin

from Greek, from ēōs dawn

eo-

Word Origin

a combining form meaning “early,” “primeval,” used in the formation of compound words:

Eocene; eohippus.

Origin

< Greek, combining form of ēṓs (Attic héōs) dawn; akin to east, Aurora

eo-a word element meaning 'early', 'primeval', as in Eocene.

[Greek, combining form of ēōs dawn]

eo-
combining form

ETYMOLOGY Greek ēō- dawn, from ēōs — more at east

: earliest : oldest
eolithic

eo-, prefixemployed as combining form of Gr. ἠώς dawn, in scientific terms of recent origin, chiefly Geol. and Palæont. First used in Eocene, with the sense ‘characterized by the ‘dawn’ or faintly recognizable beginnings of’ (the recent fauna and flora); subsequently, with similar notion, in eophytic |iːəʊˈfɪtɪk|, a. [+ Gr. ϕυτόν plant + -ic], characterized by the earliest appearance of plant-life. eozoic |iːəʊˈzəʊɪk|, a. [+ Gr. ζῷον animal], characterized by the earliest appearance of animal life; said of the Laurentian strata and the period represented by them. Also in mod.L. names of fossil genera, believed to be the earliest representatives of types still existing, as Eohippus |iːəʊˈhɪpəs| [+ Gr. ἵππος horse], the oldest known genus of the horse family. Eopteris |iːˈɒptərɪs| [+ Gr. πτερίς fern], a genus including the oldest known fern. Eosaurus |iːəʊˈsɔːrəs|, the oldest known genus of saurians. Eozoon |iːəʊˈzəʊən| [+ Gr. ζῷον animal], a supposed genus of foraminifers or rhizopods, at one time regarded as the earliest known animal; its alleged remains are now believed to be of inorganic origin; hence Eoˈzoonal a., pertaining to the eozoon.1879Le Conte Elem. Geol. 504 *Eohippus..a small animal no bigger than a fox, having three toes on the hind foot and four perfect ones on the fore foot.1880Huxley in Times 25 Dec. 4/1, I do not see..any reason to doubt that the eocene equidæ were preceded by mesozoic forms, which differed from eohippus in the same way as eohippus differs from equus.1880Dawson Earth & Man ii. 32 An *Eophytic period preceding the Eozoic.1879Le Conte Elem. Geol. 404 Unless we except the *Eosaurus, these are the first true reptiles found.1873Dawson Earth & Man ii. 18 *Eozoic or those [rocks] that afford the traces of the earliest known living beings.1871Hunt in Proc. Amer. Assoc. Sci. 53 Subsequently to the eozoic times, silicated rocks..are comparatively rare.1872Darwin Orig. Spec. x. 287 The existence of the *Eozoon in the Laurentian formation of Canada is generally admitted.1879Le Conte Elem. Geol. 275 A section of an *Eozoönal mass.1881R. Etheridge in Jrnl. Geol. Soc. XXXVIII. 54 The prevalent limestones, Eozoonal or otherwise.

eo-

word-forming element, used from mid-19c. (first in Eocene) in compound words formed by earth-scientists, and meaning "characterized by the earliest appearance of," from Greek eos "dawn, morning, daybreak," also the name of the goddess of the morning, from PIE *aus- (1) "to shine," especially of the dawn (see aurora). Piltdown Man, before exposed as a fraud, was known as Eoanthropus.

eo-

earliest, oldest:

eon, eolithic, Eozoic

eo- /ˈi:əʊ/ combining form.

ORIGIN: from Greek ēōs dawn: see -o-.

Earliest, oldest; initial.

eo-
combining form
Etymology: Greek ēō- dawn, from ēōs — more at east
: earliest : oldest
< Eohippus >
< eolithic >
specifically : first of two or three subdivisions of geologic time
< Eocene >
— compare mes-, mi-, ne-, pleio-

词汇	eo-
词根词缀	AHD Collins Dictionary.com Macquarie MWCD OED Online Etymology Dictionary Prefixsuffix.com SOED Webster eo- pref.（前缀） Most primitive; earliest: 最原始；最早： eohippus. 始祖马语源 From Greek ēōs [dawn] * see aus- 源自希腊语 ēōs [黎明] 参见 aus- eo- combining form early or primeval ⇒ Eocene ⇒ eohippus Origin from Greek, from ēōs* dawn eo- Word Origin 1 a combining form meaning “early,” “primeval,” used in the formation of compound words: Eocene; eohippus. Origin < Greek, combining form of ēṓs (Attic héōs) dawn; akin to east, Aurora eo-a word element meaning 'early', 'primeval', as in Eocene. [Greek, combining form of ēōs dawn] eo- combining form ETYMOLOGY Greek ēō- dawn, from ēōs — more at east : earliest : oldest eolithic eo-, prefixemployed as combining form of Gr. ἠώς dawn, in scientific terms of recent origin, chiefly Geol. and Palæont. First used in Eocene, with the sense ‘characterized by the ‘dawn’ or faintly recognizable beginnings of’ (the recent fauna and flora); subsequently, with similar notion, in eophytic \|iːəʊˈfɪtɪk\|, a. [+ Gr. ϕυτόν plant + -ic], characterized by the earliest appearance of plant-life. eozoic \|iːəʊˈzəʊɪk\|, a. [+ Gr. ζῷον animal], characterized by the earliest appearance of animal life; said of the Laurentian strata and the period represented by them. Also in mod.L. names of fossil genera, believed to be the earliest representatives of types still existing, as Eohippus \|iːəʊˈhɪpəs\| [+ Gr. ἵππος horse], the oldest known genus of the horse family. Eopteris \|iːˈɒptərɪs\| [+ Gr. πτερίς fern], a genus including the oldest known fern. Eosaurus \|iːəʊˈsɔːrəs\|, the oldest known genus of saurians. Eozoon \|iːəʊˈzəʊən\| [+ Gr. ζῷον animal], a supposed genus of foraminifers or rhizopods, at one time regarded as the earliest known animal; its alleged remains are now believed to be of inorganic origin; hence Eoˈzoonal a., pertaining to the eozoon.1879Le Conte Elem. Geol. 504 Eohippus..a small animal no bigger than a fox, having three toes on the hind foot and four perfect ones on the fore foot.1880Huxley in Times* 25 Dec. 4/1, I do not see..any reason to doubt that the eocene equidæ were preceded by mesozoic forms, which differed from eohippus in the same way as eohippus differs from equus.1880Dawson Earth & Man ii. 32 An Eophytic period preceding the Eozoic.1879Le Conte Elem. Geol.* 404 Unless we except the Eosaurus, these are the first true reptiles found.1873Dawson Earth & Man* ii. 18 Eozoic or those [rocks] that afford the traces of the earliest known living beings.1871Hunt in Proc. Amer. Assoc. Sci.* 53 Subsequently to the eozoic times, silicated rocks..are comparatively rare.1872Darwin Orig. Spec. x. 287 The existence of the Eozoon in the Laurentian formation of Canada is generally admitted.1879Le Conte Elem. Geol.* 275 A section of an Eozoönal mass.1881R. Etheridge in Jrnl. Geol. Soc.* XXXVIII. 54 The prevalent limestones, Eozoonal or otherwise. eo- word-forming element, used from mid-19c. (first in Eocene) in compound words formed by earth-scientists, and meaning "characterized by the earliest appearance of," from Greek eos "dawn, morning, daybreak," also the name of the goddess of the morning, from PIE aus- (1) "to shine," especially of the dawn (see aurora). Piltdown Man, before exposed as a fraud, was known as Eoanthropus. eo-* earliest, oldest: eon, eolithic, Eozoic eo- /ˈi:əʊ/ combining form. ORIGIN: from Greek ēōs dawn: see -o-. Earliest, oldest; initial. eo- combining form Etymology: Greek ēō- dawn, from ēōs — more at east : earliest : oldest < Eohippus > < eolithic > specifically : first of two or three subdivisions of geologic time < Eocene > — compare mes-, mi-, ne-, pleio-
随便看	oncoming onco-, oncho-, -oncus onco-, onc-, onch-, oncho-, onci- -one one- one one-horse Oneida gel-, gela-, gelati-, gelatino-, geli-, gelo- gelid gelo-, geloto- geloscopy gelt gem- gem gematria gembh- gemeinschaft gemin- geminate gemination Gemini gemm-, gemmu-, gemmi- gemmologist gemstone