词根词缀：a-, ab-, abs-
【来源及含义】Latin: prefix; from, away, away from
【相关描述】This prefix is normally used with elements of Latin and French origins (abs- usually joins elements beginning with c, q, or t).
The form ab- is regularly used before all vowels and h; and it becomes a- before the consonants m, p, and v. The prefix apo- has similar meanings.
This list is a very small sample of the multitudes of a-, ab-, abs- prefixes that are available in dictionaries and those in this unit are only meant to present a few examples.
【同源单词】abampere, abampere centimeter squared, abampere per square centimeter, abarticular, abarticulation, abbreviate
词根词缀：a-, an-
【来源及含义】Greek: prefix; no, absence of, without, lack of; not
【相关描述】These prefixes are normally used with elements of Greek origin, a- is used before consonants and an- is used before vowels.
It affects the meanings of hundreds of words.
There are too many words that use these prefix elements to list all of them on this site; however, there are significant examples listed in this and the other units where they exist.
【同源单词】abacterial, abaptism, abarognosis, abasia, abiocoen, abiogenesis
词根词缀：-ac
【来源及含义】Greek > Latin: suffix; from French -aque, or directly from Latin -acus, from Greek -akos forming adjectives. This suffix was used to form names of arts and sciences in Greek and it is now generally used to form new names of sciences in English; meanings, "related to, of the nature of, pertaining to, referring to"
【相关描述】The suffix -ic has related elements.
【同源单词】ambrosiac, ammoniac, amnesiac, anaphrodisiac, anthomaniac, antidemoniac
词根词缀：alumino-, alumin-
【来源及含义】Latin: aluminum [U.S.] and aluminium, [British]
【相关描述】This term was coined in 1812 by its discoverer, the British chemist Sir Humphry Davy, as an alteration of the earlier [1808] New Latin alumium, that was also coined by Sir Davy from alumina, a mineral occurring in nature as corundum plus -ium, a suffix meaning, in this case, "metal").
The variant form aluminium, which is preferred in British usage, also appeared in 1812 as a deliberate alteration of aluminum in order to eliminate confusion because of the partial resemblance to other names of certain elements, such as sodium, potassium, and magnesium, all of which were coined earlier by Sir Davy.
【同源单词】aluminate, alumine, aluminium, Aluminoid, aluminosis, aluminothermy
词根词缀：baro-, bar-, bary-
【来源及含义】Greek: weight, heavy; atmospheric pressure; a combining form meaning "pressure", as in barotaxis, or sometimes "weight", as in baromacrometer
【相关描述】In an extended sense, these elements may mean "difficult" or "slow".
【同源单词】abarognosis, baragnosis, baranesthesia, baresthesiometric, barhypesthesia, bariatrician
词根词缀：cephalo-, cephal-; -cephalic, -cephalism, -cephalous, -cephalus; -cephaly
【来源及含义】Greek: head
【相关描述】Sometimes these "head" elements are also written as: kephalo-, kephal-, etc.
【同源单词】abrachiocephalia, abrachiocephalus, acanthocephalid, acepalothoracia, acephalia, acephaline
词根词缀：-cise, -cis, -cide
【来源及含义】Latin: to cut, cut
【相关描述】From this combining form, we also get -cide, "kill", but don't confuse the two elements because they have different meanings and applications.
【相关词根词缀】Related cutting-word units: cast-; castrat-; -ectomy; mutil-; put-; sec-, seg-; temno-; -tomy; trunc-.
【同源单词】cement, chisel, circumcise, concise, concisely, conciseness
词根词缀：ergo-, erg-
【来源及含义】Greek: work
【相关描述】Also see the urg- words that have been "transformed" from the basic elements of this unit.
【相关词根词缀】 Cross references related to "work, toil" word families: argo-; ergasio-; labor-; oper-; pono-; urg-.
【同源单词】allergic, allergies, allergy, bioenergy, energetic, energy
词根词缀：gyno-, gyn-, gynaeco-, gyneco-, gyne-, -gynia, -gynic, gynec-, -gynist, -gynous, -gyny
【来源及含义】Greek: woman, women, female, females
【相关描述】Many of the words from these Greek elements refer to botanic or other biological nomenclature.
【相关词根词缀】 Related "woman, female" units: anilo-; fem-; mulie-; virgo-.
【同源单词】acrogynous, adynamogynous, agynary, agynous, androgygreed, androgynoid
词根词缀：in-3
【来源及含义】Old English, Middle English: in, into; within; toward; a prefix used in front of English words, not Latin or Greek elements; as in the words, indoors and inland
【相关描述】Don't confuse this in-3, meaning "in, into; within", with another in-2 Latin prefix meaning "in, into, within, inside, on, toward" or with the Latin prefix in-1 meaning "not".