Page:Dictionary of aviation.djvu/270

 246 DICTIONARY OF AVIATION

a wetherzmap which affords a synopsis or general view of the meteorological conditions; a synoptic wether^map.

weather- condition 'wed9z-kan,di$9n n. one of the con- ditions, circumstances, or characteristics of the wether : commonly used in the ploral.

weather-cycle 'wedaz/sai-kal n. a cycle or round of wether- conditions; one of a series of recurrent periods of time, of equal length, in each of which a certain succession of atmosferic fenemena, or course of meteorolegic events, is observd or believd to complete itself, compare weathers- period.

weather-flag 'wed9z,fz,aeg n. a flag which is used as a wether^signal; one of the special signal-flags used by the United States Wether^Bureau since the year 1891 to indi- cate the character of the atmosfenc conditions expected to occur at a given locality within thirty^six hours.

weather-forecast 'wed3z,fo:z-ka:st n. a forecast of wether? conditions; specifically, one of the daily wether^predictions, or statements of wether-probabilities, publisht by the United States Wether-Bureau.

weather-forecaster 'wedaz-fo^kar-stsz n. a forecaster of the wether; one whose occupation is to foretell or predict wether^conditions.

weather-lights 'wecter,laits n. pi. lights such as the auroral lights or heat-lightning, considerd as being related to the wether.

weather-man 'wed9z,ma?n n. a man whose occupation is the observation or prediction of wether-conditions; a wether* forecaster; a meteorologist.

weather-map 'weda^maep n. a map showing the state of the wether or atmosfenc conditions, as of temperature, pressure, and wind, thruout a country or region by con- ventional lines, shading, or other symbols; a wether^chart.

weather-notation /wedaz-no'tee-San n. a notation or system of abbreviation of terms descriptiv of the principal wether^ fenomena, as the alfabetic notation of Beaufort used in Great Britain, in unhich (c) signifies cloud, (f), fog, etc.

weather-period 'wed^pii-ci-ad n. a wetherscycle or other period of time in tuhich certain uniformities are observable in recurring wether^fenemena. compare weathertcycle.

weather-prediction 'wed9z-psi,dik$3n n. the prediction of wether^conditions; the art of forecasting the wether.

wether-prevision 'wedaz-psi/visan n. the prevision or fore- seeing of wether^conditions.

weather-prophet 'weda^psofit n. [also spelt wethertprofet] one who nakes profesies as to the wether; a forecaster.

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