Libraries around the world are digitizing rare encyclopædias to preserve them for future generations.

While researching ancient printing techniques, she found an 18th-century encyclopædia that used copperplate engravings for every illustration.

Her encyclopædiacal knowledge of local folklore made her a valuable guide to visiting scholars.

Her encyclopædial knowledge of classical music impressed even the most seasoned critics.

Her reading was encyclopædian in scope, touching on subjects from meteorology to medieval liturgy.

His marginal note identified the unknown contributor simply as 'encyclopædian', using the older typographic form.

Her encyclopædiac mind cataloged obscure facts like a living reference book.

The encyclopædians worked late into the night to verify every obscure entry.