noun
dwarf irregular galaxy
Astronomical term for a small galaxy with an irregular shape, lacking a distinct spiral or elliptical structure.
矮小不規則銀河は、星形成が活発なものが多い。
Many dwarf irregular galaxies have active star formation.
Compound of 矮小 (わいしょう, 'dwarf, diminutive'), 不規則 (ふきそく, 'irregular'), and 銀河 (ぎんが, 'galaxy'). A direct translation of the English astronomical term 'dwarf irregular galaxy'.