biochemical

adjective

bio·​chem·​i·​cal ˌbī-ō-ˈke-mi-kəl 

1

: of or relating to biochemistry

2

: characterized by, produced by, or involving chemical reactions in living organisms

a biochemical defect in the brain

biochemical noun

biochemically

ˌbī-ō-ˈke-mi-k(ə-)lē 

adverb

Examples of biochemical in a Sentence

Recent Examples on the Web

The result is a biochemical system in which the crowdedness of the cytoplasm reflects a cell’s growth and health, Holt said. —Quanta Magazine, 18 Feb. 2026

Meanwhile, pathways responsible for synthesizing certain B vitamins declined, suggesting the community was reallocating its biochemical resources rather than simply increasing activity across the board. —New Atlas, 14 Feb. 2026

Greek roots Today, scientists know that feelings of love are related to biochemical processes that release chemicals in the brain, increasing pleasure and excitement. —Tucker J. Gregor, The Conversation, 12 Feb. 2026

In the eighties, Kent Berridge, a neuroscientist at the University of Michigan, tried to study these dynamics on a biochemical level. —Dhruv Khullar, New Yorker, 9 Feb. 2026

Word History

Etymology

International Scientific Vocabulary

First Known Use

1836, in the meaning defined at sense 1

Phrases Containing biochemical

• biochemical oxygen demand

Rhymes for biochemical

• alchemical
• polemical
• academical
• agrochemical
• cytochemical
• geochemical
• histochemical
• microchemical
• neurochemical
• petrochemical
• photochemical
• phytochemical

Medical Definition

biochemical

adjective

bio·​chem·​i·​cal -ˈkem-i-kəl 

1

: of or relating to biochemistry

2

: characterized by, produced by, or involving chemical reactions in living organisms

biochemical abnormalities

biochemical processes

biochemical noun

biochemically

-k(ə-)lē 

adverb