• WordNet 3.6
    • n polygyny having more than one wife at a time
    • ***
Webster's Revised Unabridged Dictionary
    • n Polygyny The state or practice of having several wives at the same time; marriage to several wives.
    • ***
Century Dictionary and Cyclopedia
    • n polygyny Marriage or cohabitation of one man with more than one woman at the same time; polygamy as practised by the male. Polygyny is more frequent than polyandry, being the usual case of polygamy as practised by man and the lower animals.
    • n polygyny Of a male animal, the state of having more than one female mate.
    • ***
Chambers's Twentieth Century Dictionary
    • n Polygyny pō-lij′i-ni polygamy
    • ***


Webster's Revised Unabridged Dictionary
Poly-, + Gr. woman, wife
Chambers's Twentieth Century Dictionary
Gr. polys, many, gynē, woman.


In literature:

We imagine that if we refuse to recognize the fact of polygyny, we may refuse to recognize any obligations incurred by polygyny.
"Studies in the Psychology of Sex, Volume 6 (of 6)" by Havelock Ellis
Polygyny is usual, and is largely practised.
"The Mafulu" by Robert W. Williamson
Another variety of marriage that has been less common than polygyny is polyandry.
"Society" by Henry Kalloch Rowe
That polygyny is better than polyandry may be concluded from its effects.
"The World's Greatest Books--Volume 14--Philosophy and Economics" by Various
What are its relations to polyandry and polygyny?
"Essays: Scientific, Political, & Speculative, Vol. I" by Herbert Spencer
Polygyny is still more indicated when the sterility of the woman or her repugnance to sexual intercourse cause family disturbances.
"The Sexual Question" by August Forel
And what is that but countenancing polygyny?
"Modern marriage and how to bear it" by Maud Churton Braby
Both polygyny and polyandry occur.
"Man, Past and Present" by Agustus Henry Keane
Polygyny is the rule and each wife is regarded as adding dignity to the household.
"Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 6" by Various