operatsioonil

Operatsioonil is the adessive singular form of the Estonian noun operatsioon, meaning operation. It denotes location or time in relation to an operation and is commonly translated as “at the operation” or “during the operation.” The form is used with verbs that express presence, participation, or occurrence in connection with the event.

Etymology and usage context: The Estonian word operatsioon is a loanword originating from French opération (ultimately from Latin operatio), adapted into Estonian with the -tsioon suffix to form a noun meaning an act or process. In Estonian, operatsioonil is used in contexts such as medical surgery, military or police operations, and other situations where an operation is referenced.

Grammatical notes: Operatsioonil is the adessive case form, indicating that something occurs at or during the operation, or that someone is present at it. It is commonly paired with verbs of participation or presence, such as osalema (to participate) or viibima (to stay). There is also a related form operatsioonis (enessive) meaning “in the operation,” which can carry a slightly different nuance, such as being inside or within the operation itself.

Examples:

- Operatsioonil osalesid kirurgid ja õed. (Surgeons and nurses participated in the operation.)

- Ta viibis operatsioonil kogu öö. (He stayed at the operation all night.)

- Arst kontrollis patsiendi vererõhu operatsioonil. (The doctor checked the patient’s blood pressure during the operation.)

See also: operatsioon, arterioperatsioon, operatsioonieelne.