duration-contest

djo’zee-jon,ken-test. a contest as to duration of flight; a competitiv txial of flyers as to capacity to stay up in the air in continuous flight without alighting. duration-prize djo’zee-San,psaiz n. a prize or premium efferd or won for flight of long duration; a trofy for lengest continuous~light without alightrzng. dusk dask n. gloom, shade; the darker stage of twilight just before night; also, the stage of partial darkne just before dawn or daybreak. dusky ‘daski adj. somewhat dusk or dark; darkish, Eh hg shadowy. dust dast n. earth or other solid matter in the form of fine dry particles, floatrmng in the air; powdery or granular matter in the atmosfere: as, a cloud of *dust. dust-counter ‘dast,kaun-tai ”. an instrument for me suring the amount of dust or particles of solid matter in the air or atmosfere. compare coni scope. dust-fog ‘dast,fog n. a whitish fog formd of the finest mist or vapor-dust; dust-vapor fog. dust-haze ‘dast,heez n. a haze, or misty appearance of the atmosfere, usally of reddish or yellowish hue, consisting of or due to dust. dustine ‘dastz-nis 1. the state of being dusty or containing dust; dusty condition of the air or atmosfere. dust-shower ‘dast,Sau-oz ». a shower or light downpour of dust (with or without rain or snow) due to a cloud of dust having been carried into the upper atmosfere and precipitated. compare seazdust. dust-vapor ‘dast,vee-paz n. same meaning as vapor-dust. dust-wind ‘dast,wind ». a wind that brings dust-storms, such as the nerthwesterly gales on the eastern coast of Australia. dust-wisp ‘dast,wisp ». a wisp or delicate spray or streak of dust or icezparticles, usually of grayish-white color, floating high in the sky at sunset or sunrise.: dynamie d1’nemic adj. 4. of or relating to force or energy: contrasted with kinematic, and eften, loosely, with static. dynamic cooling, the cooling or lowering of temperature of a portion of the atmosfere due to the expenditure of some of its internal heat energy in expansion occasiond by inferior atmosferic pre ure from without. dynamic heating, the heating, warming, or rise of temperature of a portion of the atmosfere due to compre ion occasiond by superior atmosferic pre ure from without.