Letters that make Oort cloud
o, d, l, c, r, t, u are letters that make 'Oort cloud'
o, d, l, c, r, t, u are letters that make 'Oort cloud'
1 possible definitions for 'Oort cloud'
Under this definition, oort cloud is a noun and has the following properties:
'Oort cloud' can be a type of collection, aggregation, accumulation, assemblage.