plural of XP-90

(organic chemistry) Any derivative of a phosphatide in which one or both acyl derivatives have been removed by hydrolysis

Lacking basic necessities such as food and shelter; poor; indigent. / In distress or otherwise difficult circumstances. / (when followed by “of”) needing (the specified necessities).

(music) A mark that indicates that a note is to be played with a strong initial attack. / (music) A passage having this mark.