The term 'Man from Mars' is a phrase used to describe an extraterrestrial being, usually an ALIEN. The crossword solutions for this term are 'TIDE' (4 letters) and 'ALIEN' (5 letters). TIDE is a term used to describe the periodic rise and fall of the sea level, while ALIEN is a term used to describe a creature from outer space. Together, these two words form the phrase 'Man from Mars', which is used to describe an extraterrestrial being.