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

Oatmeal specifically touts many benefits, including being a valuable source of numerous vitamins, antioxidants and fiber; moreover, studies indicate that the biochemical composition of the grain can help improve the gut microbiome in addition to reducing blood glucose levels as well. —Forbes.com, 25 Jan. 2026

The team collected skin samples from the dolphins to measure DNA methylation patterns—biochemical modifications that determine which genes are activated—in order to estimate their biological ages. —Hasmik Kirakosyan, Scientific American, 23 Jan. 2026

Her working hypothesis is that a biochemical cascade set off by the shrinkage contracts motor proteins, which mechanically extrude the cell. —Elise Cutts, Quanta Magazine, 12 Jan. 2026

The reason for this lies in the biochemical communication between muscles and the nervous system. —Desireé Oostland, Vogue, 8 Jan. 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