Word Unit: crio- (Greek: ram)
Word Unit: cris-, crit-, cri- (Greek: to separate; a separating, putting apart; a decision, decide; to judge)
Word Unit: crist- (Latin: crest)
Word Unit: crot- (Greek: pulse beat)
Word Unit: croustico-, crousto-, crusto-, croust-, crust-; kroustico-, krousto-, kroust-, krust- + (Greek: to stretch; stretch out; to beat, to strike)
Word Unit: cruci-, crux (Latin: cross, crosslike; from the gallows tree)
Word Unit: crud- (Latin: raw, not cooked; literally, trickling with blood, bleeding; raw, bloody, cruel)
Word Unit: -crum (Latin: a suffix; result of the act of, means of)
Word Unit: cruro-, crur-; crus (Latin: leg, legs)

Related "leg, legs" word units: melo-; skel-, scel-.

Word Unit: crymo-, crym-, krymo-, krym- (Greek: cold, frost, chill; freezing)

Cross references of word families that are related directly or indirectly to "winter, freezing, frost, and/or cold": algid- (cold, chilly); cheimo-, chimo- (winter, cold); crymo-, krymo- (cold, chill, frost); cryo-, kryo-; (cold, freezing); frigo-, frig- (cold, frost); gel-, gelati- (freeze, frost, congeal); hiber- (winter, wintry); pago- (cold, freezing); psychro- (cold); rhigo- (cold, frost; shiver).

Word Unit: cryo-, cry-, kryo-, kry- (Greek: cold, very cold, freezing; used to describe the effects of low temperatures or activities carried on at a very low temperature)

Cross references of word families that are related directly or indirectly to "winter, freezing, frost, and/or cold": algid- (cold, chilly); cheimo-, chimo- (winter, cold); crymo-, krymo- (cold, chill, frost); cryo-, kryo-; (cold, freezing); frigo-, frig- (cold, frost); gel-, gelati- (freeze, frost, congeal); hiber- (winter, wintry); pago- (cold, freezing); psychro- (cold); rhigo- (cold, frost; shiver).

Word Unit: Cryogenics, Part 1 (Industrial applications of cryogenics)
Word Unit: Cryogenics, Part 2 (Industrial applications of cryogenics)
Word Unit: crypto-, crypt- (Greek: hidden, secret, secrets, secret writing; by extension, applied to secret code or ciphers)

A cross reference of other word family units that are related directly, or indirectly, to: "secret, hidden, confidential, concealed": ceal-; clandesti-; myster-; occult-; orgy; stego-, stegano-.

Word Unit: crystallo-, crystall- (Greek: crystal, ice, freeze, congeal, frost; icelike, transparent; [especially in reference to a mineral or glass])

Additional related "ice" units: glaci-; grando-.

Word Unit: cteno- cten- (Greek: comb, rake; comblike, comb-shaped)
Word Unit: cubi-, cub-, cumb-, cubit- (Latin: to lie [in a horizontal position or posture]; to lie down, to lie asleep)
Word Unit: culci-, culici-, culc- (Latin: gnat, mosquito)

A cross reference of other word family units that are related directly, or indirectly, with: "insects, bugs, worms; invertebrates": aphidi-; api-; ascari-; Dung Beetle Survival; Dung Beetles Important; Eating Worms; entomo-; formic-; Guinea worms; helmintho-; insecto-; Insects: Importance; isopter-; larvi-; lepidopter-; meliss-; mosquito; Mosquito, other Languages; Mosquitoes, Pt. 1; Mosquitoes, Pt. 2; myrmeco-; scarab; scoleco-; sphec-; taeni-; termit-; vermo-.

Word Unit: -cule, -cula, -culo, -culus, -culum (Latin: a suffix; small, tiny; also, result of the act of, means of)
Word Unit: culpa- (Latin: blame; responsible for wrong or error)