Dictionary is a medium through which a student secures a desirable hold on the concerned subject. Dictionaries related to different subjects teach the correct spellings, pronunciation and meanings of the words through which learner's knowledge of varied terms, definitions, principles, methods & theorems, etc enhances. This Dictionary of Biology has been designed to deal precisely with those topics, which students of schools and colleges, and aspirants of various competitive examinations like JEE Main & Advanced are always looking for. To the point and concise information has been provided in this dictionary of chemistry. This dictionary covers the terms, definitions, concepts, methods, laws & experiments starting from alphabet A till alphabet Z. Plus all the terms of NCERT Textbook have been covered in the dictionary. Also appendices have been covered at the end of the book.