simple past tense and past participle of countersecure

(Philippines) The (ad hominem) practice of branding, naming or accusing individuals or organizations critical or not fully supportive of the government's position as communists, leftists, subversiv...

(organic chemistry) A phenolic derivative of quinazoline 2-quinazolinol

(statistics) The difference between the first and third quartiles; a robust measure of sample dispersion.