(mineralogy) An orthorhombic-dipyramidal reddish-brown mineral of the ludwigite group, with chemical formula Ni₂FeBO₅.

present participle of refringe

Absence of responsibility for a crime, tort, etc. / Lack of understanding about sensitive subjects such as sexuality and crime. / Lack of ability or intention to harm or damage.

(organic chemistry) an aliphatic carboxylic acid, CH₃(CH₂)₇COOH, nonanoic acid, used in the manufacture of plastics, pharmaceuticals etc