Paramedic term for time AND life-critical patient, especially when their condition deteriorates so badly that they could pass if not treated immediately.
Paramedic: Received a Code One case (time critical and unconscious) patient who suffered a fall, but during our travels, but it has turned into a Priority Zero as she also a cardiac patient who is having a cardiac arrest as we speak. We must get to her ASAP.
by brockhoward October 1, 2019
Get the Priority Zeromug. by Zero_nonbinary September 7, 2021
Get the Dirty zeromug. One hot ass bitch in Mass Effect 2 and 3. She's got good tattoos, badass attitude, and some powerful biotics. In 3 she becomes a teacher which turns out to be a good career option for her.
by Dovahkiin1144 February 22, 2019
Get the Subject Zeromug. by gavy111 December 1, 2010
Get the Splash the Zerosmug. 
Get the Zero Damselsmug. (adv.) Never. The exact opposite of '24-7'. That is, something that takes up absolutely none of your time.
"What about Kristina, do you ever think about her these days...?"
"After what she did to me, I think about her zero-7, to be honest."
"After what she did to me, I think about her zero-7, to be honest."
by bill cauliflower April 18, 2020
Get the zero-7mug. by bagelswithdrugs August 12, 2021
Get the ZERO ULTRAmug.