词根：-cad-, -cid-, -cas-
【词根含义】：落下,降临,发生
【词根来源】：来源于拉丁语动词cado, cadere, cecidi, casus(落下), 落下意味着降临, 降临意味着意外发生。
【同源单词】：decadence, decay, accident, accidental, accidentally
词根：-cis-, -cid-
【词根含义】：切
【词根来源】：来源于拉丁语动词caedo, caedere, cecidi, caesus(砍,劈)。
【同源单词】：circumcision, concise, concision, decision, decisive
词根：-sec-, -sect-, -seg-
【词根含义】：切割
【词根来源】：-sec-/-sect-/-seg-来源于拉丁语动词seco, secare, secui, sectus(切割)。
【同源单词】：skin, insect, insecticide, intersection, section
前缀：il-, in-, ir-, im-
【词根含义】：不,无,非;入,向内
【词根来源】：(il-用于l前;im-用于b, m, p前;ir-用于r前;in-用于其它情况) 来源于拉丁语in。
【同源单词】：illegal, illegality, illegitimate, illiterate, illogical
词根词缀：-cide, -cides, -cidal
【来源及含义】Latin: a suffix; kill, killer; murder, to cause death, slayer; cutter; “to cut down”
【相关描述】Don’t confuse this element with the another -cide that means “to cut”; although -cide, “death”, is related to -cise, -cide, “to cut down”.
【相关词根词缀】 Related "death, dead; kill" units: lethal-; mort-; neci-; necro-; phono-; thanato-.
【同源单词】aborticide, acaricide, adulticide, algaecide, algicide, algiocide
词根词缀：insecto-, insect-, insecti-
【来源及含义】Latin: a bug; literally, "cut into," from insectum, with a notched or divided body; literally, "that which is cut up, segmented" [as the bodies of the first invertebrates to which the term was applied or appeared to be]
【相关词根词缀】 An entomological unit of words about insects.
A cross reference of other word family units that are related directly, or indirectly, with: "insects, bugs, worms; invertebrates":
aphidi-;
api-;
ascari-;
culci-;
Dung Beetle Survival;
Dung Beetles Important;
Eating Worms;
entomo-;
formic-;
Guinea worms;
helmintho-;
Insects: Importance;
isopter-;
larvi-;
lepidopter-;
meliss-;
mosquito;
Mosquito, other Languages;
Mosquitoes, Pt. 1;
Mosquitoes, Pt. 2;
myrmeco-;
scarab;
scoleco-;
sphec-;
taeni-;
termit-;
vermo-.
【同源单词】disinsectization, insect, Insect Biotechnology, Insecta, insectarian, insectarium
词根词缀：sec-, seg-, -sect, -section, -sectional
【来源及含义】Latin: to cut
【相关词根词缀】 Related cutting-word units: cast-; castrat-; -cise, -cide; -ectomy; mutil-; put-; temno-; -tomy; trunc-.
【同源单词】acusection, acusector, antivisectionist, antivivisection, antivivisectionism, antivivisectionist