õpikus

Õpikus is the inessive singular form of the Estonian noun õpik, meaning "textbook" or "primer." In Estonian grammar, the inessive case marks location, so õpikus translates roughly as "in the textbook" or "in a primer." The base noun õpik refers to a book designed for instruction, often used for teaching reading or school subjects. A typical Estonian school uses many different õpikud published for various grades and subjects.

The word õpik derives from the verb õppima "to learn" and has related forms such as genitive õpiku and plural nominative õpikud. The inessive form õpikus is common in educational texts, curricula, and dictionaries and appears in phrases like "antud õpikus" (in this textbook) or "õpiku sisu" (the content of the textbook).

In daily use, õpik can refer to any instructional book, from language primers to mathematics or science readers. The form õpikus is not usually treated as a separate lexical item outside of its grammatical function; it is simply the locative form of õpik. The concept of an õpik is central to Estonian education and publishing, where a wide range of primers and textbooks support instruction in schools and adult education.

Examples: See harjutus on toodud õpikus. Õpiku lõpus on lisamaterjal.