atra

Atra or ATRA can refer to:Stachybotrys chartarumAll-trans retinoic acidAmerican Tort Reform Associationthe location of an Arabic fortress west of the Tigristhe Atra model safety razor, produced by the Global Gillette company
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Tretinoin is the acid form of vitamin A and so also known as all-trans retinoic acid or ATRA. It is a drug commonly used to treat acne vulgaris and keratosis pilaris. It is available as a cream or gel (brand name Retin-A). It is also used to treat acute promyelocytic leukemia (APML).
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adj. gloomy, dark, dim

adj. dark, black; lugubrious, frightening

um| atrior -or -us| aterrimus -a -um ADJ
black| dark; dark-colored (hair/skin); gloomy/murky; unlucky; sordid/squalid

hanker, covet, lust, desire