teadlasele
Teadlasele is the allative singular form of the Estonian noun teadlane, which means scientist. The allative case marks direction toward a person or thing and is used to indicate the recipient of an action, the target of a verb, or the entity to whom something is given, sent, or addressed.
In Estonian, the allative is formed with the suffix -le attached to the noun stem. For teadlane,
Usage examples illustrate its function. Ma saatsin raamatu teadlasele. I sent the book to the scientist. Me
Notes on grammar and semantics. Teadlasele is not a standalone noun but a grammatical form of teadlane.
See also: Estonian grammar, allative case, noun inflection in Estonian.