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

词根词缀：recto-, rect-

【来源及含义】Latin: straight [intestine], direct, right; that is, "the part of the large intestine that ends at the anus"

【同源单词】anorectal, rectalgia, rectitis, rectoabdominal, rectoanal, rectocolitis

词根词缀：regi-, reg-, rec-, rex-

【来源及含义】Latin: to direct, to rule, to lead straight, to keep straight; to guide, to govern

【相关描述】Although it does not appear to be correct, all of the words in this unit etymologically come from this family group. Some words; such as, surge and its related formats, may be presented as separate units; however, they originally evolved from this family unit.

【相关词根词缀】Cross references of word families related directly, or indirectly, to: "master, lead, leading, ruler, ruling, govern": -agogic; agon-; arch-; -crat; dom-; gov-; magist-; poten-; tyran-.

【同源单词】address, address, addressee, addresser, addressograph, adroit