bioloogilisel

Bioloogilisel is the adessive singular form of the Estonian adjective bioloogiline, meaning "biological." It is used to indicate a relation to biology in a context such as place, condition, or manner, typically linking to a noun in the adessive case. In common phrases, it conveys that something is considered within a biological framework or perspective, for example bioloogilisel tasandil (on a biological level), bioloogilisel viisil (in a biological manner), or bioloogilistel tingimustel (under biological conditions).

Etymology and form: The base word bioloogiline comes from bioloogia (biology), itself derived from the Greek roots bios ("life") and logia ("study of"). The adjective forms a standard Estonian declension with case endings. The adessive singular ending -lisel appears when the modifier describes a noun in the adessive case, and it agrees with that noun in number and case within the noun phrase.

Usage notes: The form bioloogilisel is typically found in formal or scientific writing and in phrases that specify a context or condition linked to biology. It does not stand alone as a noun but functions as an adjective, modifying a noun in the adessive case. Other related forms include bioloogiline (base form, "biological") and bioloogiliselt (adverb, "biologically").

Examples:

- Bioloogilisel tasandil on elu protsesside mõistmine võtmetähtsusega.

- Bioloogilisel viisil võivad organismid kohaneda keskkonna muutustega.

- Bioloogilistel tingimustel võivad reaktsioonid olla erinevad.

See form is a standard tool in Estonian scientific and academic discourse to delimit statements to a biological context.