now and then
— Adverb
– English
~ sporadically and infrequently; "he was arrogant and occasionally callous"; "open areas are only occasionally interrupted by clumps of trees"; "they visit New York on occasion"; "now and again she would take her favorite book from the shelf and read to us"; "as we drove along, the beautiful scenery now and then attracted his attention"
natural theology
— Noun
– English
~ a theology that holds that knowledge of God can be acquired by human reason without the aid of divine revelation
number theorist
— Noun
– English
~ a mathematician specializing in number theory
Newton's theory of gravitation
— Noun
– English
~ (physics) the theory that any two particles of matter attract one another with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them
nodding thistle
— Noun
– English
~ Eurasian perennial naturalized in eastern North America having very spiny white cottony foliage and nodding musky crimson flower heads; valuable source of nectar
Norman Thomas
— Noun
– English
~ United States socialist who was a candidate for president six times (1884-1968)