Täisealine

Täisealine is a Finnish adjective that means fully grown or fully developed. It describes living beings or specimens that have reached their mature size and physical development, distinguishing them from juveniles or subadults. The term can be applied to humans, animals, or plants, but it is most common in biological, zoological, agricultural, or veterinary contexts. It does not indicate legal adulthood; for legal age Finnish typically uses täysi-ikäinen.

Usage notes: Täisealine is relatively rare in everyday speech and tends to appear in scientific or descriptive writing. In contemporary usage, more common synonyms are täysikasvuinen or aikuinen, depending on the context. The word may appear in historical texts or literature with a formal or technical tone.

Etymology and form: The word appears to be a compound built from täysi ("full") with an ending that denotes a state, and its exact historical derivation is not widely documented in standard dictionaries.

Examples: Täisealine hevonen has reached physical maturity and can be evaluated for breeding. Täisealine koira can participate in certain performance tests. The phrase täisealine yksilö refers to a mature individual of a species.

See also: Finnish language; glossary of biological terms; animal husbandry.