unusual or surprising; difficult to understand or explain
children have some strange ideas
he's a very strange man
it is strange how things change
not previously visited, seen, or encountered; unfamiliar or alien
she was lost in a strange country
a harsh accent that was strange to his ears
denoting or involving a flavour (variety) of unstable quark having an electric charge of -1/3. Strange quarks have similar properties to down quarks and bottom quarks, but are distinguished from them by having an intermediate mass