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：capno-, capn-, capnod-

【来源及含义】Greek: smoke; vapor; sooty [extended meaning is carbon dioxide]

【相关词根词缀】 Inter-related cross references, directly or indirectly, involving word units dealing with "smoke, smoking": atmido-; Capnomania & Fumimania, Pt. 1; Capnophobia & Fumiphobia, Pt. 1; fumi-; nebula-; typho-.

【同源单词】acapnia, acapnic, acapnotic, capneic, capnocytophaga, capnodous