concealment
n.the act of hiding something so that other people cannot see or find it. In the military, it often refers to hiding a vehicle or person to avoid being seen by the enemy.
n.the act of hiding or keeping something secret from view or knowledge. In a military context, it refers to the deliberate use of camouflage or other methods to prevent detection by an adversary.
“The soldiers used natural camouflage for the concealment of their position.”
“Effective concealment is essential for a sniper to remain undetected while waiting for the target to appear.”
“The success of the operation depended entirely on the concealment of the supply line, which had to remain hidden from both aerial reconnaissance and ground patrols.”
“X-ray body scanners are deployed across category B local prisons and are used on many prisoners entering the estate to detect internal concealment of contraband including drugs, phones and weapons.”
“So, recognising that Hockney was more interested in the “concealments of portraiture, its feints and deflections” than in exposing any hidden truth, Cahill follows his lead.”
From Old French concelement (“concealment, secrecy”). By surface analysis, conceal + -ment.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.