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Best Answer: Right now, according to the dictionary, it's still two. Though it could change with the common usage to either hyphenate time-frame or to put it all in one word.
Time and Sequence Some transitional words that signal time or sequence order : First, to begin with, in the past, in the morning, at breakfast, second, next, now, later, at noon, at lunch, third, then, soon, in the afternoon, at dinner, last, finally, in the future, by evening, at night.