Letter B

Breast development, early

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The beginning of breast development at puberty is known medically as thelarche.

It is now a normal event at an earlier age (e.g., age 8) than in the past.

The term thelarche comes from two Greek words: 'thele,' nipple + 'arche,' beginning.

Thelarche is frequently (and incorrectly) written without the 'h' as telarche.

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