Agar

Part of speech: noun

Pronunciation: /ˈeɪ.ɡə/

Definitions

1. A gelatinous material obtained from red seaweeds, commonly used in culinary environments as a thickening agent and in scientific laboratories for culturing microorganisms effectively
2. Derived from certain marine algae, this viscoelastic substance acts as a thickener in food processing while also serving as a growth medium for various bacteria in research
3. A gelatinous substance extracted from red algae, used as a food thickener and as a medium for microbial culture in laboratory settings

Etymology: Agar is a substance with an unexpectedly Asian origin story. Its name is generally traced to Malay, where "agar" or "agar-agar" means "jelly", and it is the jelly-like extract of red seaweeds. The word's exact path into English is uncertain: some sources connect it to a Hindi word, "agar", which in turn may come from the Sanskrit "agaru", the name of a fragrant aloeswood, perhaps via a shared sense of something gummy or resinous. The jelly itself was long a staple of East Asian cooking, and it reached Western science through a more ordinary kitchen. Its use as a solidifying agent for culturing microorganisms in laboratories is what keeps the word in everyday scientific vocabulary today, where it forms petri-dish media on which bacterial colonies grow visibly.

Synonyms: gelatin, gel, agar-agar