(Greek: many, much; excessive; abnormal amount, profuse, ample, large quantity; multiple, abundant, numerous)
Don’t confuse this poly- with another -poly which means “to sell”.
2. Bigamy literally means a second marriage distinguished from a third or additional marriage; while polygamous refers to many marriages and implies more than two.
Regardless of how they are expressed, all of them represent excesses!
With polygyny and polygynous, we have the marriage of a man to more than two women at the same time. Then we have polygamy and polygamous:
- The civil offense of having several wives or husbands at the same time; or having more than two wives or husbands at the same time.
- Bigamy literally means a second marriage distinguished from a third or additional marriage; while polygamy means many marriages and implies more than two.
"Polygamy is the marriage with many husbands or wives at one time".
There are more details about polygamy here.
2. A government where the sovereignty is shared by several people.
3. A collegiate, or divided executive.
2. Conveying something that is written in, or composed of, several forms of speech: The polyglot staff-memo presented a variety of native tongues that were understood by the employees; including, Italian, English, and Portuguese.