(mathematics) A prime number that is one more or one less than a factorial. For example, 7 is a factorial prime, since 3! + 1 = 7.

(biochemistry) A calcium-dependent protein that binds some phospholipids

present participle of knock up

That can or does physically penetrate something; piercing, penetrating. / Displaying insight or discrimination; acute; penetrating. / (sports) That can penetrate opposition defences.