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：apt-, ept-

【来源及含义】Latin: fit, fitted, suited, suitable, appropriate; join, fasten

【同源单词】adapt, adapt, adaptability, adaptable, adaptableness, adaptably

词根词缀：ptyalo-, ptyal-, ptya-, pty-

【来源及含义】Greek: spittle, salivia; salivary gland

【相关词根词缀】Other related saliva and/or spittle units: salivo-; sialo-; sput-.

【同源单词】aptyalism, glycoptyalismm glycosialia, hyperptyalism, hypoptyalism, oligoptyalism, pseudoptyalism