Eidograph
Ei´do•graph, n. [Gr. form + graph.] An instrument for copying drawings on the same or a different scale; a form of the pantograph.

Eidolon
Ei•do´lon, n. [NL., fr. Gr. image. See Idol.] An image or representation; a form; a phantom; an apparition. Sir W. Scott.

Eight (at), n. [See Ait.] An island in a river; an ait. [Obs.] "Osiers on their eights." Evelyn.

Eight, a. [AS. eahta; akin to OS. ahto, OFries. achta, D. & G. acht, OHG. ahto, Icel. atta, Sw. åtta, Dan. otte, Goth. ahtau, Lith. asztůni, Ir. & Gael. ochd, W. wyth, Armor. eich, eiz, L. octo, Gr. ’oktw•, Skr. ashtan. rad.306. Cf. Octave.] Seven and one; as eight years.

Eight (at), n.
1. The number greater by a unit than seven; eight units or objects.
2. A symbol representing eight units, as 8 or viii.

Eighteen
Eight´een (a"ten•), a. [AS. eahtatyne, eahtatene. See Eight, and Ten, and cf. Eighty.] Eight and ten; as eighteen pounds.

Eighteen
Eight´een, n.
1. The number greater by a unit than seventeen; eighteen units or objects.
2. A symbol denoting eighteen units, as 18 or xviii.

Eighteenmo
Eight•een´mo, a. & n. See Octodecimo.

Eightetethe
Eight´e•teth•e, a. [OE., fr. AS. eahtateóða; eahta eight + teóða tenth. Cf. Eighteenth, Tenth.] Eighteenth. [Obs.]

Eighth (atth), a. [AS. eahtoða.]
1. Next in order after the seventh.
2. Consisting of one of eight equal divisions of a thing. Eighth note (Mus.), the eighth part of a whole note, or semibreve; a quaver.

Eighth, n.
1. The quotient of a unit divided by eight; one of eight equal parts; an eighth part.
2. (Mus.) The interval of an octave.

Eighthly
Eighth´ly, adv. As the eighth in order.

Eightieth
Eight´i•eth, a. [From Eighty.]
1. The next in order after seventy-ninth.
2. Consisting of one of eighty equal parts or divisions.

Eightieth
Eight´i•eth, n. The quotient of a unit divided by eighty; one of eighty equal parts.

Eightling
Eight´ling, n. [ Eight + - ling.] (Crystallog.) A compound or twin crystal made up of eight individuals.

Eightscore
Eight´score, a. & n. Eight times twenty; a hundred and sixty.

Eighty
Eight´y, a. [AS. eahtatig, where the ending -tig is akin to English ten; cf. G. achtzig. See Eight, and Ten.] Eight times ten; fourscore.

Eighty
Eight´y, n.
1. The sum of eight times ten; eighty units or objects.
2. A symbol representing eighty units, or ten eight times repeated, as 80 or lxxx.

Eigne, a. [OF. aisne, ainsne, F. aîne, fr. L. ante natus born before. Cf. Esnecy.]
1. (Law) Eldest; firstborn. Blackstone.
2. Entailed; belonging to the eldest son. [Obs.] Bastard eigne, a bastard eldest son whose parents afterwards intermarry.

Eikonogen
Ei•kon´o•gen, n. [Gr. e’ikw•n, e’iko•nos, image + root of gi•gnesqai to be born.] (Photog. & Chem.) The sodium salt of a sulphonic acid of a naphthol, C₁₀H₅(OH)(NH₂)SO₃Na used as a developer.

Eikosane
Ei´ko•sane, n. [Gr. e’i•kosi.] (Chem.) A solid hydrocarbon, C₂₀H₄₂, of the paraffine series, of artificial production, and also probably occurring in petroleum.

Eikosylene
Ei•kos´y•lene, n. [Gr. e’i•kosi twenty + acet ylene.] (Chem.) A liquid hydrocarbon, C₂₀H₃₈, of the acetylene series, obtained from brown coal.

Eild, n. [See Eld.] Age. [Obs.] Fairfax.

Eirenarch
Ei•re•narch, n. [See Irenarch.] (Gr. Antiq.) A justice of the peace; irenarch.

Either
Ei´ther (e"ther or i"ther; 277), a. & pron. [OE. either, aither, AS. aegðer, aeghwaeðer (akin to OHG. eogiwedar, MHG. iegeweder); a + ge + hwaeðer whether. See Each, and Whether, and cf. Or, conj.]
1. One of two; the one or the other; — properly used of two things, but sometimes of a larger number, for any one.
"Lepidus flatters both, Of both is flattered; but he neither loves, Nor either cares for him." Shak.
"Scarce a palm of ground could be gotten by either of the three." Bacon.
"There have been three talkers in Great British, either of whom would illustrate what I say about dogmatists." Holmes.
2. Each of two; the one and the other; both; — formerly, also each of any number.
"His flowing hair In curls on either cheek played." Milton.
"On either side … was there the tree of life." Rev. xxii. 2.
"The extreme right and left of either army never engaged." Jowett (Thucyd).

Either
Ei´ther, conj. Either precedes two, or more, coördinate words or phrases, and is introductory to an alternative. It is correlative to or.
"Either he is talking, or he is pursuing, or he is in a journey, or peradventure he sleepeth." 1 Kings xviii. 27.
"Few writers hesitate to use either in what is called a triple alternative; such as We must either stay where we are, proceed, or recede." Latham. Either was formerly sometimes used without any correlation, and where we should now use or.
"Can the fig tree, my brethren, bear olive berries? either a vine, figs?" James iii. 12.