词根词缀：fem-, femi-

【来源及含义】Latin: woman, women; not masculine: neither man nor men

【相关词根词缀】 Related "woman, female" units: anilo-; gyno-; mulie-; virgo-.

【同源单词】anti-feminist, bonne femme, covert-feme, defeminize, ecofeminism, ecofeminist

词根词缀：femto-

【来源及含义】Danish and Norwegian: fifteen; a decimal prefix used in the international metric system for measurements

【相关描述】It is used in the metric [decimal] system as quadrillionth [U.S.] and thousand-billionth part [U.K.], 10^-15 [0.000 000 000 000 001]. The metric symbol for femto- is f.

【相关词根词缀】 Related "metric" families: yotta; zetta; exa; peta; tera; giga; mega; kilo; hecto; deka; deci; centi; milli; micro; nano; pico; atto; zepto; yocto.

【同源单词】femtoampere, femtogram, femtojoule, femtoliter, femtometer, femtomole

词根词缀：femur-, femuro-

【来源及含义】Latin: thigh

【同源单词】femoral, femoroarticular, femur

词根词缀：-fend, fend-, fen-

【来源及含义】Latin: ward off, to ward off, strike, keep off, guard, protect; from fendere [found only in compounded words]

【同源单词】Audemus jura nostra defendere, counteroffensive, defence, defenceless, defencelessly, defend

词根词缀：fenestra-, fenestr-

【来源及含义】Latin: window; in anatomy, a small opening in a bone; to bring to light, to show

【相关词根词缀】 A cross reference of other word family units that are related directly, indirectly, or partially with: "opening, hole, cavity, tract, tube": alveolo-; antro-; anu-; celo-; coelio-; concho-; fenestra-; hernio-; hiat-; meato-; ora-; parieto-; poro-; pyl-, pyle-; pylor-; sphinctero-; splanchn-; stomato-; syringo-; uretero-; urethro-; vagino-; ventricul-.

【同源单词】adfenestration, autocide-defenestration, autodefenestration, craniofenestria, defenestrate, defenestrated

词根词缀：-fer, -ferous

【来源及含义】Latin: to bear, to carry; to produce; to bring

【相关词根词缀】 Cross references of word families related to "bear, carry, bring": duc-; ger-; later-, -lation; phoro-; port-.

【同源单词】ad referendum, afferent, aquifer, auriferous, circumference, confer

词根词缀：ferment-, fermento-

【来源及含义】Latin: yeast; substance containing enzymes that break down carbohydrates; from the Latin root of fervere, "to boil, to seethe"

【同源单词】ferment, ferment, fermentability, fermentable, fermentarian, fermentater

词根词缀：ferro-, ferr-, ferri-

【来源及含义】Latin: iron; pertaining to, or containing iron

【同源单词】ferreous, ferric, ferriferous, ferroalloy, ferrochromium, ferroconcrete

词根词缀：ferv-

【来源及含义】Latin: to boil; hot; to begin to boil, to be hot; deeply earnest; ardent

【相关词根词缀】 Related "heat, hot" word units: pyreto-; thermo-. Related "bubble" word unit: ebulli-.

【同源单词】effervesce, effervescence, effervescent, effervescible, effervescing, effervescingly

词根词缀：fest-, -fest

【来源及含义】Latin: seize, to be seized; capable of being seized

【同源单词】infest, infestation, infested, infester, infesting, infestuous