I. pə(r)ˈmisəbəl adjective
Etymology: Middle English, from Medieval Latin permissibilis, from Latin permiss us (past participle of permittere to permit) + -ibilis -ible — more at permit
1. : that may be permitted : allowable , admissible
permissible error
permissible dose
maximum permissible exposure to radiation
always permissible in a crisis but now a regular practice — John Buchan
2.
a. of an explosive : permitted by law to be owned, purchased, or sold
b. : approved by the Federal Bureau of Mines for use in gaseous coal mines
• per·mis·si·ble·ness noun -es
II. noun
( -s )
: a permissible explosive
sales of permissibles and other high explosives — U.S.Daily