By Jit Majumdar
- the immortal or everlasting lexicon
- a Sanskrit thesaurus by the Buddhist scholar Amarasińha (4th century) and the oldest extant thesaurus of its kind, and has three chapters, the first dealing with the names of gods and goddesses and heavens, the second with words about earth, towns, animals and humans and the third with words related to grammar, language, and other miscellaneous topics.