Dictionary is a book dealing with the words of a language or of some special subject. However this work should not be mistaken for a dictionary in true sense as this book is a quest to make people understand the finer aspects of the terms used in this field. With the ever increasing knowledge horizon of the subject, the terms used have grown to perplexing stature as a result students or researchers alike, many a times find it difficult to adjudge the perspective of the technical terms. Moreover there is a dearth of technical dictionaries in this field, so keeping these facts in mind we have tried to address this problem with our book. Definitely there will be many shortcomings in this attempt so healthy criticism will be greatly acknowledged to improve this work. Hopefully this dictionary will help in academic pursuit of all those people working in the field of animal nutrition.