It is my pleasure to present a unique vocabulary of about 3,000+ basic “Science words” and their instant meanings in Hindi. Subject of science is like an ocean, and one cannot fully explain everything. However, students and professionals can use at great extent this handy tool to understand the matter instantly. I would like all the persons connected with field of science to download free this OFFLINE – APP, and to approach me to point out any error in this vocabulary as well as to forward their suggestions through my E-mail address : [email protected] Your trust and support for the success of this venture will always inspire me to serve better for the time to come.