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  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. 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.

  3. Twin | Identical, Monozygotic, Dizygotic | Britannica

    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 …

  4. Twin Beds & Single Bed Frames - IKEA

    Twin beds & single beds IKEA offers a stylish selection of single beds to suit all ages and design aesthetics. A popular choice for children, teens and single adults with limited bedroom space, our …

  5. 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.

  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 of twin by The Free Dictionary

    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 …

  8. twin - Wiktionary, the free dictionary

    Dec 14, 2025 · twin (third-person singular simple present twins, present participle twinning, simple past and past participle twinned) (transitive, obsolete outside Scotland) To separate, divide.

  9. Twin - Definition, Meaning & Synonyms | Vocabulary.com

    If you have a twin brother or sister, the two of you are always the same age. There are identical twins, who have the same DNA, and fraternal twins, who are more like two siblings who happen to be born …

  10. twin - WordReference.com Dictionary of English

    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 pair; identical: …