About 4,790,000 results
Open links in new tab
  1. Twin - Wikipedia

    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.

  2. Expecting Two? Here Are 10 Surprising Facts About Twins

    Expecting two babies? Here are some fascinating tidbits about fraternal and identical twins you may not have heard before.

  3. Twins Alice and Ellen Kessler die by assisted suicide at 89

    2 days ago · Alice and Ellen Kessler, the singers and dancers who reached international fame in the 1950s and '60s, died by assisted suicide together in Germany.

  4. TWIN Definition & Meaning - Merriam-Webster

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

  5. Twin | Identical, Monozygotic, Dizygotic | Britannica

    Oct 8, 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, …

  6. Understanding Twins - Psychology Today

    There are different types of twins, identical and fraternal being the most common. Identical, or monozygotic, twins develop from the same fertilized egg that splits into two. These twins are...

  7. TWIN | definition in the Cambridge English Dictionary

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

  8. Twin - definition of twin by The Free Dictionary

    1. Being two or one of two offspring born at the same birth: twin sisters. 2. Being two or one of two identical or similar people, animals, or things: twin cities; a twin bed. 3. Botany Of or relating to …

  9. Identical Twins: DNA, Conception, Statistics, and More

    Apr 28, 2025 · Identical twins, also known as monozygotic twins, share the same egg at conception and are always either both boys or both girls. Fraternal twins, also known as …

  10. twin - Wiktionary, the free dictionary

    Oct 31, 2025 · twin (third-person singular simple present twins, present participle twinning, simple past and past participle twinned) (transitive, obsolete outside Scotland) To separate, divide.