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词汇 ab-
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ab- 1
pref.（前缀）
  1. Away from:
    离开，分离：
    aboral.
    对口的；离口的

语源
  1. Latin * see apo-
    拉丁语 *参见 apo-
ab- 2
pref.（前缀）
  1. Used to indicate an electromagnetic unit in the centimeter-gram-second system:
    电磁：用来表示厘米─克─秒制中电磁的单位：
    abcoulomb.
    电磁库仑

语源
  1. From absolute
    源自 absolute

ab-1

prefix

away from; off; outside of; opposite to
⇒ abnormal
⇒ abaxial
⇒ aboral

Origin

from Latin ab away from

ab-2

prefix

denoting a cgs unit of measurement in the electromagnetic system
⇒ abvolt

Origin

abstracted from absolute

ab-

Word Origin
1
a formal element occurring in loanwords from Latin, where it meant “away from”:
abdicate; abolition.
Also, a-, abs-.
Origin
< Latin ab (preposition and prefix) from, away, cognate with Greek apó, Sanskrit ápa, German ab, English of1, off
ab-I.
a prefix meaning 'off', 'away', 'from', as in abduct, abjure.
[Latin, representing ab (preposition) from, away; related to Greek apo from]
II.
a prefix attached to practical electric units, indicating a centimetre-gram-second electromagnetic unit of measurement: ◆ an abvolt is equivalent to 10-8 volts.
[abbreviation of absolute]
ab-
prefix
 ETYMOLOGY  Middle English, from Anglo-French & Latin; Anglo-French, from Latin ab-, abs-, a-, from ab, a — more at of
: from : away : off
    abaxial
ab-
/æb/  
（亦作 abs-）
prefix
away; from
表示“偏离”, “离”, “从”：

abaxial

abdicate.

词源
from Latin.
▪ I.ab-prefix repr. L. ab, prep. ‘off, away, from,’ cogn. w. Gr. ἀπό, Skr. apa, OTeut. af, OE. of, mod.E. of, off, mod.G. ab. In L. it was reduced to a- before p-, m-, and v-, became au- before f-, and abs- before c- and t-. The form ab- was in OFr. generally retained as in abusum, abus; sometimes changed to av- as in abortionem, avortion; sometimes reduced to a- as in abbreviāre, abregier, abridge. Ab- appears in Eng. in words that have lived on through OFr. as abuse; that have been adapted or formed in later Fr. as absorb; or have been adapted or formed in Eng. as ablaqueate, abhominal, abarticulation. Quite recent, and apparently suggested by ab-normal, are formations like ab-oral, ab-actinal, in which ab- is used for ‘position away from.’▪ II.ab-, prefix2 Electr. rare.|æb|[Shortened form of absolute a.]Prefixed to the names of practical units (predecessors of SI units) of electrical and magnetic quantities to form the names of corresponding units in the CGS electromagnetic system, as abampere, abcoulomb, abfarad, abhenry, abohm, abvolt.q1905W. Duddell in Jrnl. Inst. Electr. Engin. XXXIV. 172 The second proposition of Dr. Kennelly was that names should be given to each of the C.G.S. units in both the magnetic and the static systems, and he suggested that the prefix ab or abs should be used with the names of the practical units (Volt, Ampere, Ohm, etc.), to form names for the corresponding C.G.S. electromagnetic units, and the prefix abstat to form the names for the C.G.S. electrostatic units.1909Cent. Dict. Suppl., Abcoulomb.Ibid., Abfarad.Ibid., Abhenry.1930A. Zeleny Elem. Electr. 402 The abcoulomb is the quantity of electricity that passes any plane in a circuit in 1 second when the current is 1 abampere.1940F. A. Fish Fund. Princ. Electr. & Magn. Circuits (ed. 3) iii. 28 The absolute unit, or abvolt, is that e.m.f. which will cause 1 abampere of current to flow in 1 abohm of resistance.Ibid. iv. 90 If es is expressed in abvolts, and i is in abamperes, L is given in abhenries; the abhenry is, therefore, equal to 1 henry divided by 109.1963Jerrard & McNeill Dict. Sci. Units 13 The inconvenience of having three systems of electrical units, ab units, stat units and practical units has been overcome by the introduction of the metre, kilogramme, second, ampere units.1966McGraw-Hill Encycl. Sci. & Technol. I. 332/1 The abampere (10 amperes) is seldom used.1970Amer. Jrnl. Physics XXXVIII. 421 The relationships among corresponding symbols are given and applied to precise statements about the relation between the oersted and the ampere per meter, the abampere and the ampere, etc.
ab-
word-forming element meaning "away, from, from off, down;" from Latin ab-, ab "off, away from," cognate with Greek apo "away from, from," Sanskrit apa "away from," Gothic af, Old English of, from PIE root *apo- (see apo-). Reduced to a- before -m-, -p-, or -v-; sometimes abs- before -c- or -t-.
ab- /əb, ab/ prefix.Repr. Latin ab off, away, from. In mod. formations, = position away from, as abaxial.
 DERIVATIVE abˈapical adjective (Biology) pertaining to or designating the side or part remote from or opposite to the apex M20.
☞ ab
ab-
I. prefix
Etymology: Middle English, from Old French & Latin; Old French, from Latin, from ab from — more at of
1. : from : departing from
 < abnormal >
2. : away : outside of
 < abenteric >
II. prefix
Etymology: absolute (I)
— used for a cgs electromagnetic unit (as in the following table)

ab- 1
  • a- (found if the root word started with m, p, or v)
  • abs- (found if the root word started with c or t)

    • Prefix

    1. non-productive From
      absorb
    2. non-productive Away from; outside of.
      abnormal, abaxial.

    Etymology

    From Latin ab-, from Proto-Indo-European *h₂epo (“off, away”) (English off, of).[1] See Proto-Indo-European *apo- (English apo-, via Ancient Greek).

    ab- 2

    Prefix

    1. physics A unit of electromagnetic charge in the centimeter-gram-second system: the abcoulomb.

    Etymology

    Abbreviation of absolute.

    References

    1. ^ Elliott K. Dobbie, C. William Dunmore, Robert K. Barnhart, et al. (editors), Chambers Dictionary of Etymology (Chambers Harrap Publishers Ltd, 2004 [1998], ISBN 0550142304), page 1
  • ab- at OneLook Dictionary Search

    • 前缀：ab- 离去、相反、不

    abnormal 反常的

    absorb 吸去

    abuse 滥用

    abaxial 离开轴心的

    abduct 诱去，骗走

    ablactation 断奶

    前缀：ab-

    【词根含义】：分离,脱离;相反;加强意义

    【词根来源】：来源于拉丁语前缀ab-。

    【同源单词】：abbreviate, abbreviation, abbreviator, abdicate, aberrance
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    更新时间：2025/2/11 9:18:36