plural of estroprogestinic

plural of operatour

Material used on the outside of a roof, such as shingles. / The process of constructing a roof or roofs. / A way of travel which consists in clambering over the roofs of skyscrapers.

White, whitish, or greyish-white. / White or grey with age. / (zoology) Of a pale silvery grey. / (botany) Covered with short, dense, greyish white hairs. / (figuratively) Old or old-fashioned; trite.