Sunspots are dark areas of irregular shape on the surface of the Sun. Their short-term and long-term cyclical nature has been established in the past century. Spots are often big enough to be seen with the naked eye.
nonchalance meaning, nonchalance definition | English Cobuild dictionary. nonchalant. If you describe someone as nonchalant, you mean that they appear not to worry or care about things and that they seem very calm. adj (=casual) Clark's mother is nonchalant about her role in her son's latest work..., It merely underlines our rather more nonchalant attitude to life. â¦ nonchalance n-uncount. Affecting nonchalance, I handed her two hundred dollar bills.
Nonchalant means unconcerned, so chalant would theoretically mean worried or overly anxious, but there's no such word in the English language. We borrowed the negative form from the French language, but never bothered to import the root form.