noun Etymology: Jan Oort died 1992 Dutch astronomer Date: 1974 a spherical shell of cometary bodies believed to surround the sun far beyond the orbit of Pluto and from which some are dislodged when perturbed (as by a passing star) to fall toward the sun
OORT CLOUD
Meaning of OORT CLOUD in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012