Borrowed from Late Latin physicālis, from Latin physica (“study of nature”), from Ancient Greek φυσική (phusikḗ), feminine singular of φυσικός (phusikós, “natural; physical”), from φύσις (phúsis, “origin, birth; nature, quality; form, shape; type, kind”), from φῠ́ω (phŭ́ō, “grow”), ultimately from Proto-Indo-European *bʰuH- (“to appear, become, rise up”).