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y    音標拼音: [w'ɑɪ]
n. 字母y

字母y

Y
藍--黃

Y
n 1: a silvery metallic element that is common in rare-earth
minerals; used in magnesium and aluminum alloys [synonym:
{yttrium}, {Y}, {atomic number 39}]
2: the 25th letter of the Roman alphabet [synonym: {Y}, {y}, {wye}]

Y \Y\ (w[imac]), n.; pl. {Y's} (w[imac]z) or {Ys}.
Something shaped like the letter Y; a forked piece resembling
in form the letter Y. Specifically:
(a) One of the forked holders for supporting the telescope of
a leveling instrument, or the axis of a theodolite; a
wye.
(b) A forked or bifurcated pipe fitting.
(c) (Railroads) A portion of track consisting of two
diverging tracks connected by a cross track.
[1913 Webster]

{Y level} (Surv.), an instrument for measuring differences of
level by means of a telescope resting in Y's.

{Y moth} (Zool.), a handsome European noctuid moth {Plusia
gamma}) which has a bright, silvery mark, shaped like the
letter Y, on each of the fore wings. Its larva, which is
green with five dorsal white species, feeds on the
cabbage, turnip, bean, etc. Called also {gamma moth}, and
{silver Y}.
[1913 Webster]


Y \Y\ (w[imac]).
Y, the twenty-fifth letter of the English alphabet, at the
beginning of a word or syllable, except when a prefix (see
Y-), is usually a fricative vocal consonant; as a prefix, and
usually in the middle or at the end of a syllable, it is a
vowel. See Guide to Pronunciation, [sect][sect] 145, 178-9,
272.
[1913 Webster]

Note: It derives its form from the Latin Y, which is from the
Greek [Upsilon], originally the same letter as V.
Etymologically, it is most nearly related to u, i, o,
and j. g; as in full, fill, AS. fyllan; E. crypt,
grotto; young, juvenile; day, AS. d[ae]g. See {U}, {I},
and {J}, {G}.
[1913 Webster]

Note: Y has been called the Pythagorean letter, because the
Greek letter [Upsilon] was taken to represent the
sacred triad, formed by the duad proceeding from the
monad; and also because it represents the dividing of
the paths of vice and virtue in the development of
human life.
[1913 Webster]


Y \Y\ ([imac]), pron.
I. [Obs.] --King Horn. --Wyclif.
[1913 Webster] Y


Y- \Y-\, or I- \I-\ . [OE. y-, i-, AS. ge-, akin to D. & G. ge-,
OHG. gi-, ga-, Goth. ga-, and perhaps to Latin con-;
originally meaning, together. Cf. {Com-}, {Aware}, {Enough},
{Handiwork}, {Ywis}.]
A prefix of obscure meaning, originally used with verbs,
adverbs, adjectives, nouns, and pronouns. In the Middle
English period, it was little employed except with verbs,
being chiefly used with past participles, though occasionally
with the infinitive. Ycleped, or yclept, is perhaps the only
word not entirely obsolete which shows this use.
[1913 Webster]

That no wight mighte it see neither yheere. --Chaucer.
[1913 Webster]

Neither to ben yburied nor ybrent. --Chaucer.
[1913 Webster]

Note: Some examples of Chaucer's use of this prefix are; ibe,
ibeen, icaught, ycome, ydo, idoon, ygo, iproved,
ywrought. It inough, enough, it is combined with an
adjective. Other examples are in the Vocabulary.
[1913 Webster] Spenser and later writers frequently
employed this prefix when affecting an archaic style,
and sometimes used it incorrectly.
[1913 Webster]

1. General purpose language syntactically like {RATFOR},
semantically like {C}. Lacks structures and pointers. Used
as a source language for Jack W. Davidson and Christopher
W. Fraser's peephole optimiser which inspired {GCC} {RTL} and
other optimisation ideas.

{(ftp://ftp.cs.princeton.edu/pub/ypo.tar.Z)}. It is a copy
of the original distribution from the {University of Arizona}
during the early 80's, totally unsupported.

["The Y Programming Language", D.R. Hanson, SIGPLAN Notices
16(2):59-68 (Feb 1981)].

[Jack W. Davidson and Christopher W. Fraser, "The Design and
Application of a Retargetable Peephole Optimiser", TOPLAS,
Apr. 1980].

[Jack W. Davidson, "Simplifying Code Through Peephole
Optimisation" Technical Report TR81-19, The University of
Arizona, Tucson, AZ, 1981].

[Jack W. Davidson and Christopher W. Fraser, "Register
Allocation and Exhaustive Peephole Optimisation"
Software-Practice and Experience, Sep. 1984].

2. See {fixed point combinator}.

Y-O Ranch, WY -- U.S. Census Designated Place in Wyoming
Population (2000): 242
Housing Units (2000): 86
Land area (2000): 2.436005 sq. miles (6.309225 sq. km)
Water area (2000): 0.000000 sq. miles (0.000000 sq. km)
Total area (2000): 2.436005 sq. miles (6.309225 sq. km)
FIPS code: 86737
Located within: Wyoming (WY), FIPS 56
Location: 42.035835 N, 104.939874 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Y-O Ranch, WY
Y-O Ranch
Y, WY
Y


Y, AK -- U.S. Census Designated Place in Alaska
Population (2000): 956
Housing Units (2000): 818
Land area (2000): 333.415653 sq. miles (863.542540 sq. km)
Water area (2000): 3.107994 sq. miles (8.049668 sq. km)
Total area (2000): 336.523647 sq. miles (871.592208 sq. km)
FIPS code: 86470
Located within: Alaska (AK), FIPS 02
Location: 62.036803 N, 149.987154 W
ZIP Codes (1990):
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Y, AK
Y

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