The literal definition doesent apply here. There are examples of people being "baptized with water" but not being baptized with Spirit. (Acts 8:14-17, 19:6) "Baptized" in the sense of church members has to do with recieving of the spirit (dechomai), referring to the living waters overflowing from the belly (pletho) with incomprehensible truths. "In the last day, that great day of the feast, Jesus stood and cried, saying, If any man thirst, let him come unto me, and drink. He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water. (But this spake he of the Spirit, which they that believe on him should receive: for the Holy Ghost was not yet given; because that Jesus was not yet glorified.)" (John 7:37-39, KJV) "And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance." (Acts 2:4, KJV) "For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit." (1 Corinthians 12:13, KJV)