pääakseli

== Finnish == === Etymology === pää- +‎ akseli === Pronunciation === IPA(key): /ˈpæːˌɑkseli/, [ˈpæːˌɑ̝ks̠e̞li] Rhymes: -ɑkseli Syllabification(key): pää‧ak‧se‧li Hyphenation(key): pää‧akse‧li === Noun === pääakseli main shaft (in a machine) (optics) optical axis, principal axis (mathematics) principal axis (geometry) synonym of isoakseli (“major axis”) ==== Declension ==== ==== Derived terms ====