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：aesth-, esth-, aesthe-, esthe-, aesthesio-, esthesio-, aesthesia-, -esthesia, -aesthetic, -esthetic, -aesthetical, -esthetical, -aesthetically, -esthetically

【来源及含义】Greek: feeling, sensation, perception

【相关词根词缀】 Related-word units meaning feeling: senso-; pass-, pati-; patho-.

【同源单词】acanthesthesia, acatamathesia, acenesthesia, acmesthesia, acmesthetic, acouesthesia

词根词缀：algesi-, alge-, alges-, algesio-, algi-, algio-, -algesia, -algesic, -algetic, -algic, -algia, -algy

【来源及含义】Greek: pain, sense of pain; painful; hurting

【相关描述】Used actively in medical terminology to denote a condition of sensitivity to pain as specified by the combining root.

【相关词根词缀】 Cross references related to "pain, hurt; suffering, injury" word families: -agra; algo-; angina-; dolor-; Masochism; noci-; odyno-; poen-; pono- (toil, work; pain); Sadism.

【同源单词】abdominalgia, acromelalgia, acrostealgia, acupuncture analgesia, adenalgia, adiposalgia