How can tartar and plaque be removed from teeth without grinding? is there any paste, etc. for it?
The girders of a suspension bridge form an arc. The definition of an arc is a curve or bowed shape, like a part of a circle. An example of an arc is a rainbow. To arc is defined as to make a curved shape or move in a curved path.
corona in Astronomy topic. From Longman Dictionary of Contemporary Englishcoronacoâ§roâ§na /kÉËrÉÊnÉ $ -ËroÊ-/ noun [countable] HAthe shining circle of light seen around the Sun when the Moon passes in front of it in an eclipse. Examples from the Corpus.