| fluorite |
a transparent, crystalline, and variously colored mineral that is the chief source of fluorine; calcium fluoride. |
| fluoro- |
fluorine. [2 definitions] |
| fluorocarbon |
any of various organic chemical compounds resulting from the substitution of fluorine for hydrogen in a hydrocarbon, used in refrigeration, lubrication, plastic and resin manufacture, as a fire extinguisher, and formerly as the propellant in aerosol cans. |
| fluorometer |
a device used to detect and measure the wavelength and intensity of fluorescence. |
| fluoroscope |
a fluorescent screen used with x-rays or other radiation for viewing the internal structure of opaque objects such as the human body. |
| fluoroscopy |
examination by means of a fluoroscope. |
| fluorosis |
an abnormal condition, such as mottling of teeth, caused by excess intake of fluoride compounds. |
| fluorspar |
see "fluorite." |
| flurry |
a light snowfall that lasts only a short time. [4 definitions] |
| flush1 |
a brief but heavy gush or flow, esp. of water. [10 definitions] |
| flush2 |
full, plentiful, or plentifully supplied, as with money. [6 definitions] |
| flush3 |
to frighten from cover or cause to start up or take flight. [3 definitions] |
| flush4 |
a hand or set of playing cards all of the same suit, of special value in certain card games. |
| fluster |
to cause to be or to become nervous, confused, or agitated. [2 definitions] |
| flute |
a high-pitched musical instrument of the woodwind family, consisting of a long slender tube of wood or metal with finger holes or keys along it, that is played by blowing into a mouthpiece at one end or across a hole near one end. [8 definitions] |
| fluting |
a decorative pattern of long, rounded, parallel grooves, as on columns or some glassware. [3 definitions] |
| flutist |
a person who plays the flute, esp. professionally. |
| flutter |
to move swiftly back and forth or up and down in a jerky or irregular manner; flap. [9 definitions] |
| flutter kick |
a swimming kick in which the legs are extended horizontally and moved rapidly up and down without bending the knees. |
| fluty |
with a soft, clear, flutelike tone. |
| fluvial |
of, found in, or produced by a river. |