Sednoid
Origin
Sedn(a) + -oid
Full definition of sednoid
Noun
sednoid
(plural sednoids)- (astronomy) A trans-Neptunian object of the inner Oort cloud, that is, one with a perihelion greater than 75 AU.it could hint at a massive planet hiding in the inner Oort cloud whose gravity shepherds sednoids into similar orbits.