One twin, the 'donor' twin, is small and anemic, the other, the 'recipient' twin, is large and polycythemic. The lives of both twins are endangered by this condition.

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 …

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

Dec 13, 2025 · Identical twins, born from a single fertilized egg, continue to fascinate and guide medical research. Learn about twins, from conception onwards.

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

either of two persons or things closely resembling each other. adj. [before a noun] being a twin or twins: twin sisters. being two persons or things closely related to each other. being one of a …

Twins are two people who were born at the same time from the same mother. Sarah was looking after the twins. I think there are many positive aspects to being a twin.

Twin definition: One of two identical or similar people, animals, or things; a counterpart.

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

Jul 8, 2024 · More than 70% of twin pregnancies are fraternal twins, with the majority of other twins being identical. Other types of twins—like conjoined, parasitic, and polar body twins—are …