prófið
Prófið is the definite singular form of the Icelandic noun próf, which means a test, examination, trial, or sample. The base noun próf is neuter and widely used in education, science, and everyday speech. The word derives from Old Norse próf and is cognate with related terms in other Germanic languages, all linked to testing or proving something.
In usage, prófið denotes a specific test or examination; the indefinite form próf is used for any
In mathematics and formal logic, the common Icelandic word for "proof" is sönnun, not próf, although everyday
The word is common in Icelandic education, science, and daily life, reflecting the broad sense of testing,