12-letter words containing c, r, o, i, s
- factorisable — Alternative spelling of factorizable.
- factory ship — a whaling ship equipped to process killed whales and to transport the oil and by-products.
- fascia-board — a band or fillet, as for binding the hair.
- ferrosilicon — a ferroalloy containing up to 95 percent silicon.
- fiber optics — the branch of optics that deals with the transmission of light through transparent fibers, as in the form of pulses for the transmission of data or communications, or through fiber bundles for the transmission of images.
- fibre optics — optical fibre
- fibroblastic — a cell that contributes to the formation of connective tissue fibers.
- fibrosarcoma — a sarcoma derived from fibroblast cells, often able to generate collagen.
- fidel castro — Cipriano [sip-ree-ah-noh;; Spanish see-pree-ah-naw] /ˌsɪp riˈɑ noʊ;; Spanish ˌsi priˈɑ nɔ/ (Show IPA), 1858?–1924, Venezuelan military and political leader: president 1901–08; exiled 1908.
- first cousin — cousin (def 1).
- first school — A first school is a school for children aged between five and eight or nine.
- fish factory — a factory where fish is processed
- flickermouse — Alternative form of flittermouse.
- fluoresceine — Alternative spelling of fluorescein.
- fluoroscopic — of or relating to the fluoroscope or fluoroscopy.
- folkloristic — the traditional beliefs, legends, customs, etc., of a people; lore of a people.
- food service — the preparation, delivery, serving, etc., of ready-to-eat foods: The cafeteria employs over 20 people in food service.
- for instance — a case or occurrence of anything: fresh instances of oppression.
- for-instance — an instance or example: Give me a for-instance of what you mean.
- forcibleness — The quality of being forcible.
- forensically — pertaining to, connected with, or used in courts of law or public discussion and debate.
- fornications — Plural form of fornication.
- fornicatress — (obsolete) A woman guilty of fornication.
- forrest city — a city in E Arkansas.
- fort collins — a city in N Colorado.
- fort pickens — Andrew, 1739–1817, American Revolutionary general.
- foster child — a child raised by someone who is not its natural or adoptive parent.
- fracastorius — a walled plain in the fourth quadrant of the face of the moon: about 60 miles (97 km) in diameter.
- friction saw — a high-speed circular saw, usually toothless, that is used for cutting metals by using frictional heat to melt the material adjacent to it.
- frictionless — surface resistance to relative motion, as of a body sliding or rolling.
- frog sticker — Slang. a knife, especially one carried as a weapon.
- frog-sticker — Slang. a knife, especially one carried as a weapon.
- frolicsomely — In a frolicsome manner.
- frontispiece — an illustrated leaf preceding the title page of a book.
- fructiferous — fruit-bearing; producing fruit.
- fructivorous — Fruit-eating.
- fructosamine — (organic compound) A chemical compound that can be considered the result of a reaction between fructose and ammonia or an amine (with a molecule of water being released).
- fumariaceous — belonging to the plant family Fumariaceae.
- furunculosis — the condition characterized by the presence of boils.
- garrison cap — overseas cap.
- gastrocnemii — Plural form of gastrocnemius.
- gastronomics — the cooking style typical of a region or country
- gastroscopic — Of or pertaining to gastroscopy.
- geochemistry — the science dealing with the chemical changes in and the composition of the earth's crust.
- geostrategic — Of, pertaining to, or using geostrategy.
- geraniaceous — belonging to the Geraniaceae, the geranium family of plants.
- gesticulator — to make or use gestures, especially in an animated or excited manner with or instead of speech.
- glycerolysis — chemical decomposition resulting from the interaction of a compound and glycerol.
- gospel choir — a choir performing gospel music
- graciousness — pleasantly kind, benevolent, and courteous.