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:tono-, -tonia, -tone, -tony, -tonic, -tonical (tension)
【来源及含义】Greek: tonos = tension, pressure
【相关描述】The element tono- is a combining form with the meanings "stretching", "tension", "tone", used in the formation of compound words.
The suffix element -tonia is a combining form with the meanings of "muscle tension" or "nerve tension"; as specified by the initial element: hypertonia; used also in the formation of words that denote more generally a personality type or personality disorder; for example, catatonia and somatotonia.
【同源单词】amyotonia, amyotonic, angiohypertonia, angiohypotonia, atonia, atonic