Definition of "singleton" [sin•gle•ton]

• Games A playing card that is the only one of its suit in a player's hand. (noun)
• An individual separated or distinguished from two or more of its group. (noun)
• An offspring born alone. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Although women with a term singleton cephalic pregnancy with a previous caesarean section (group 5) represented only 11. 4% of the obstetric population, this group was the largest contributor to the overall caesarean section rate (26. 7% of all the caesarean section)."
• "A general rule of thumb is that the mother should gain 25 to 35 pounds, the weight of a full-term singleton pregnancy, by the end of the second trimester—and then gain an additional 15 to 25 pounds in the last trimester."
• "The study recruited full-term singleton children born in 1991 in 10 geographic areas and measured their height and weight from ages 2 to 12 years."