BIP39 means Bitcoin Improvement Proposal 39. The words are selected from a specific list of 2048 prevalent English words which can be used to the deliver a binary seed (your private key). You should be in a position to examine if the final word of your seed in the movie http://rylanmecp341.wpsuo.com/from-words-to-wide-range-exactly-how-to-efficiently-make-use-of-bip39-passphrases-for-your-copyright-pocketbooks