1British The prime minister.‘a private meeting with the PM’
2A post-mortem.‘it was important to be present at the PM if the pathologist would allow it.’autopsy, post-mortem examination, pm, dissection, necropsyView synonyms
3A private message sent on social media, an online forum, etc.‘drop me a PM if you want more details’
Send (someone) a private message on social media, an online forum, etc.‘I'll PM you when I'm back online’[with two objects] ‘you said you'd PM'd me his number but I haven't received it’
The chemical element promethium.