Learn how to pronounce vaccine with Imago Spectrum. Suggestions, Comments, Mistakes? Please leave feedback below. Imago Spectrum allows you to easily memorize common English words and phrases by joining visual and auditory learning environments into a short video. Focus on the images and repeat vaccine several times for best retention results. In this video we are speaking the word, vaccine. Do take note of how vaccine is spelled. The definition of vaccine is listed below the word in the video. Vaccine: A preparation of a weakened or killed pathogen, such as a bacterium or virus, or of a portion of the pathogens structure that upon administration stimulates antibody production or cellular immunity against the pathogen but is incapable of causing severe infection. Have fun studying. Remember to take breaks. Current Word ID: 7026