1. Pertaining to or suffering from a stroke or a sudden loss of physical control or consciousness: Joe's mother had an apoplectic attack which was caused when a blood vessel in her brain ruptured or became blocked.
2. Conveying extreme anger: When anyone is very upset or greatly disturbed, he or she or she is considered as someone who is having an apoplectic reaction to something that really bothering him or her.
3. Etymology: from Latin apoplecticus and Greek apoplektikos; from apoplessein, "to be disabled with a stroke".