Link: https://en.wiktionary.org/wiki/Wiktionary:Word_of_the_day/2026/October_19

metamorphosis n 🔊

1. (uncountable) The act of changing in form, shape, or substance; (especially) transformation by supernatural means; (countable) an instance of this.
2. (uncountable) Noticeable change in character, appearance, function, or condition; (countable) an instance of this.
3. (uncountable, biology) Change in the form and often habits of an animal (or, in obsolete usage, a plant) after the embryonic stage during normal development (e.g., the transformation of a caterpillar into a butterfly or a tadpole into a frog); (countable) an instance of this.
4. (uncountable, histology and pathology, now rare except in fatty metamorphosis) Change, usually degenerative, in the structure of a specific body tissue; (countable) an instance of this.
5. (uncountable, biology, chiefly botany, now rare) Evolutionary change in the form of an organ; (botany) change of one type of organ into another; (countable) an instance of this.
6. (chemistry and biochemistry, obsolete) A chemical reaction, especially one involving catalytic or enzymatic action.
7. (countable, obsolete) A form or state after a transformation.

☞ Genderfluid Visibility Week, taking place annually from October 17 to 24, was established in 2021 to celebrate, empower, and raise awareness for genderfluid individuals.

Holometabolous vs. Hemimetabolous.svg

Dragonfly metamorphosis.jpg

A diagram showing two types of metamorphosis (sense 3)

https://en.wiktionary.org/wiki/Wiktionary:Word_of_the_day/2026/October_19