áttvísi
nafnorðkvenkynátt-vísi
and ættvísi, f. genealogical knowledge or science, Skálda 161, 169, Bárð. 164, Bs. i. 91, Fms. vii. 102; the áttvísi formed a part of the old education, and is the groundwork of the old Icel. historiography, esp. of the Landnama.