e/Non-inclined orbit

Information
has gloss	eng: A non-inclined orbit is an orbit which is contained in the plane of reference. It therefore has inclination equal to zero, if the orbit is retrograde. If the plane of reference is the equator, these orbits are called equatorial; if the plane of reference is the ecliptic, they are called ecliptic. As these orbits lack nodes, the ascending node is usually taken to lie in the reference direction (usually the vernal equinox), and thus the longitude of the ascending node is taken to be zero. Also, the argument of periapsis is undefined.
lexicalization	eng: Non-inclined orbit
instance of	(noun) the path of an electron around the nucleus of an atom electron orbit, orbit