204 DICTIONARY OF AVIATION
snow-spectacles 'sNoo^pekta-kslz n. pi. a. kind of spectacles or shield with narrow slits, designed to protect the eyes from the glare of the snow.
soar so:z intr. mount on wings, or as en wings, thru the air; rise aloft and remain en the wing without visible move- ments of the pinions; fly easily to a great height with but little advance in any direction; sail en the air; glide.
soar sz:z n. height attaind in soaring; the range of one that soars.
soarer 'soi-zaz n. a bird which habitually soars.
soaring 'so:-ir) n. the action of the verb soar; the act or process of flying easily and lightly upward with or without wingsmovement; the action of sailing en the air.
automatic soaring, soaring perfermd by an aircraft by automatic means; soaring by means of self-acting mech- anism.
dynamic soaring, soaring which depends upon want of uniformity of the wind, in distinction from soaring in a wind which is uniform and has an upward velecity-compo- nent.
soaring-energy 'sor-zir^enaz-dsi n. energy of soaring.
soaringly 'soi-ein-li adv. as if soaring; so as to soar; with an upward motion or direction. .
soaring-machine / so:-?irj-ni9 / Siin n. a machine designed for soaring or practising soaring flight; a gliding-machine ; a glider.
soaring-velocity 'sD:-zin-vi,tesi-ti n. velocity or speed of soaring or gliding.
solano sa'Jai-no n. an easterly or southerly wind occurring in Spain or en the northern coast of the Mediterranean Sea.
somersault 'sAmaz/scilt n. [also spelt sommersault] a com- plete turn in the air; a revolution or rotation in the air, usually about a transverse axis.
sonora S3'no:-z9 n. a sterm occurring in parts of southern California; also, an immense thundercloud.
soul sool n. the loose dry pith, in the form of a series of caps or thimbles, in the calamus, tube, barrel or quill of a bird's fether.
sound sound v.
1. tr. mesure the depth ef; fathom: as, *sounding the ocean of air.
2. intr. use soundmg^apparatus, as in finding the depth of the air below an aircraft : as, *sounding for the bettom or terrain.
sounding-balloon 'saun-dirj-bs^uun n.
1. a balloon used for sounding or investigating the air