The human twin birth rate in the United States rose 76% from 1980 through 2009, from 9.4 to 16.7 twin sets (18.8 to 33.3 twins) per 1,000 births. [5] The Yoruba people have the highest rate of twinning in …

Nov 21, 2025 · twin, either of two young who are simultaneously born from one mother. Twinning, common in many animals, is of two biological kinds: the one-egg (monozygotic), or identical, type …

The meaning of TWIN is either of two offspring produced in the same pregnancy. How to use twin in a sentence.

TWIN meaning: 1. either of two children born to the same mother on the same occasion: 2. one of two very similar…. Learn more.

The special relationship between twins allows researchers to examine the differences between genetic and environmental influences over both physical and mental health, as well as traits and ...

Define twin. twin synonyms, twin pronunciation, twin translation, English dictionary definition of twin. n. 1. One of two offspring born at the same birth. 2. One of two identical or similar people, animals, or …

TWIN definition: either of two children or animals brought forth at a birth. See examples of twin used in a sentence.

TWIN definition: 1. either of two children born to the same mother on the same occasion: 2. one of two very similar…. Learn more.

TWIN meaning: 1 : either one of two babies that are born at the same time to the same mother; 2 : either one of two similar things that form a pair

1 day ago · The TwinSpires Edge is your source for the latest horse racing information, betting picks, wagering education and handicapping analysis. Visit daily to read fresh, in-depth features, insightful …