词根词缀：abort-, aborti-

【来源及含义】Latin: miscarry, pass away, perish by an untimely birth

【相关词根词缀】 Related "birth, born, childbirth, offspring" words: feto-; lochio-; nasc-, nat-; proli-; toco-, toko-.

【同源单词】abort, aborticidal, aborticide, abortifacient, abortion, abortional

词根词缀：aboulo-, aboul-, abulo-, abul-

【来源及含义】Greek: irresolution, indecision, loss or defect of the ability to make decisions

【同源单词】aboulia, aboulias, aboulic, aboulomania, abulia, paraboulia

词根词缀：abysso-, abyss-, abys-

【来源及含义】Greek > Latin: Greek [abussoz], a-, "no" plus bussos, "bottom" through Latin [abyssus], "no bottom, bottomless"

【相关词根词缀】Inter-related cross references, directly or indirectly, involving the "sea" and the "ocean" bodies of water: Atlantic; batho-, bathy- (depth); bentho- (deep, depth); halio-, halo- (salt or "the sea"); mare, mari- (sea); necto-, nekto- (swimming); oceano-; pelago- (sea, ocean); plankto- (drifting); thalasso- (sea, ocean).

【同源单词】abysm, abysmal, abysmally, abyss, abyssal, abyssal plains

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：academ-

【来源及含义】Greek > Latin: [originally, Academus/Akademus, a name of a hero in Greek mythology; then it became a gymnasium near Athens where Plato taught]

【相关描述】In the beginning, academy referred to the "olive grove of Academus" or "the groves of Academe". Plato established his school in 387 B.C. Music, philosophy, and literature were taught there. Some accounts say that Plato sat on the ground and taught while resting against the trunk of an olive tree.

Now academies generally exist as private-secondary schools, military institutions; as art, literary, and scientific societies; and institutions in the entertainment world. According to John Ayto, the more general meanings "college, place of training" derive from French.

【同源单词】academe, academia, academic, academical, academician, academicism

词根词缀：acantho-, acanth-, -acanth, -acanths, -acanthid, -acanthous

【来源及含义】Greek: used either as a prefix or as a suffix; pointed appendages; spine, spiny; thorn, thorny

【同源单词】acanth, acantha, acanthaceous, acanthamebiasis, acanthamoeba, acanthesthesia

词根词缀：acaro-, acar-, acari-, acarin-

【来源及含义】Greek > Latin: "tiny spider", mite[s] "itch"; ticks

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "spider; arachnoidea": arachno-; arano-; mite, mites.

【同源单词】Acarapis, acararian, Acari, acarian, acariasis, acaricidal

词根词缀：accipit-

【来源及含义】Latin: bird of prey, a hawk; hawk-like

【相关描述】From Latin capere, "to seize".

【同源单词】accipiter, accipitral, accipitres, Accipitriformes, accipitrine, Terretur minimo pennae stridore columba unguibus

词根词缀：-aceous, -acea, -aceae, -aceaen, -aceus

【来源及含义】Latin: a suffix; having the quality of, of the nature of, characterized by, belonging to, resembling

【相关描述】There are hunderds of words that utilize the -aceous suffix which are not shown here; however, the following will present important examples.

A suffix that forms adjectives and is used with technical combinations, especially in biological terms: "pertaining or belonging to, of the nature of, or characterized by; to be full of, to possess abundantly". The suffix -acea usually denotes "orders and classes in zoology" while the suffix -aceae usually denotes "orders and families in botany" and -aceaen is used to denote members of "orders of the animal kingdom".

【同源单词】acanthaceous, -aceous, alliaceous, ampullaceous, amygdalaceous, amylaceous

词根词缀：acerb-, acerbo-; acri-, acrid-

【来源及含义】Latin: bitter, sharp, sour, stinging

【相关描述】Formed from a blend of Latin acer- (feminine acris, neuter acre) which are both related to Latin acus, "needle"; acies, "sharp edge, point, the front of an army, line of battle, battle array"; and acuere, "to sharpen".

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "sour, sharp": aceto-; acid-; acies- (not "sour"); acuto- (not "sour"); oxy-; pung- (not "sour").

【同源单词】acerbate, acerbic, acerbity, acerbophobia, acerophobia, acerose