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：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：gno-, gnos-, gnoto-, -gnostic, -gnosia, -gnomic, -gnomonic, -gnomical, -gnomy, -gnosia, -gnostic, -gnosis

【来源及含义】Greek: know, learn, discern

【相关词根词缀】 Inter-related cross references, directly or indirectly, involving word units meaning "know, knowledge; learn, learning": cogni-; discip-; histor-; intellect-; learn, know; math-; sap-; sci-; sopho-.

【同源单词】abarognosis, acognosia, ad ignorantiam, agnogenic, agnoiology, agnosia

词根词缀：-osis, -sis, -sia, -sy, -se

【来源及含义】Greek > Latin: a suffix; actor, process, condition, or state of; result of; expresses a state or abnormal condition or process of some disease

【同源单词】abarognosis, abdominal aponeurosis, acanthosis, acarine dermatosis, acarinosis, acariosis