vaht

Vaht is a native Estonian noun meaning foam, froth, or lather. It refers to the light, bubbly material formed on liquids by agitation or chemical action. In everyday usage, vaht describes the foam on beer, the foamy head on hot beverages such as coffee, and the froth produced by cleaning agents. It can also denote natural foam created by waves on seas or rivers under certain conditions, as well as the foam that forms during milk foaming for drinks.

Beyond ordinary language, vaht appears in scientific and industrial contexts to describe foaming phenomena in liquids, foaming agents, and processes that generate or control foam. The term is used across disciplines to distinguish a visible, bubble-rich layer from the liquid beneath it, and its interpretation is largely descriptive rather than technical.

Etymology and classification: Vaht is a native Estonian word linked to the Finnic language family, with related terms in neighboring Finnic languages that encode the idea of foam or froth. Grammatically, vaht functions as a common noun and forms standard case inflections as part of Estonian grammar.

In summary, vaht denotes the common phenomenon of foam or froth in natural and manufactured contexts, functioning as a general descriptor in everyday speech and as a term in various technical discussions.