DictionarystarchPlant carbohydrate
noun / verb

starch

STARCH/stɑːrtʃ/

A plant carbohydrate used for food and stiffening fabrics.

Potatoes and rice contain starch, a major source of food energy.

A bowl of fine white starch powder beside potatoes and a crisp starched linen collar, practical material still life, no labels.
Etymology

Middle English sterchen meant “stiffen with starch”; the noun developed from this verb as the name of the flour-based substance used to stiffen or whiten cloth.

In context

This Week in Science (TWIS)55:51
discovered potato starch in crevices of 10,900 year old stone tools in Escalante Utah this is uh this is possibly their earliest sign of potato being used as food
Wait For It... - This Week in Science Podcast (TWIS) - Episode 626

More examples

  • A little starch thickens the sauce as it heats.
  • She starches the shirt collars to keep them crisp.
  • A few friendly jokes take the starch out of the ceremony.

Forms

starch · starches · starched · starching

starchy adjective — Containing much starch; stiff or formal.

Similar words

carbohydrate
Names a broader nutrient category that includes sugars and starch.
sizing
Refers to fabric-stiffening treatments, which need not contain starch.