Definition of the word pass into

The phrase "pass into" is a temporal preposition that describes a change in location or state of being. Its origin can be traced back to Old English, where it was formed by combining the word "passan" meaning "to go by" or "to travel through" with the preposition "into." In Middle English, the phrase was "pasen into," with the second "s" being pronounced as a voiceless fricative sound at the end of the first syllable. This double consonant is a result of the language's grammatical inflection system, where words were marked with endings to indicate tense, number, and case. During the Great Vowel Shift in the 15th century, the vowel in "pasen" changed from the long "a" sound to the schwa, resulting in the modern-day pronunciation of "passen" becoming "passin." However, in the 19th century, the word "pass" was re-analyzed as a separate word, and the preposition "into" was separated from it. Thus, "pass into" as we know it today evolved through various linguistic changes over time, from its Old English origins to its current form as an English preposition used for describing motion or transition into a new location or state.