Lucida Sans Unicode

Lucida Sans Unicode is an OpenType typeface from the design studio of Bigelow & Holmes, designed to support the most commonly used characters defined in version 1.0 of the Unicode standard. It is a sans-serif variant of the Lucida font family and supports Latin, Greek, Cyrillic and Hebrew scripts, as well as all the characters used in the International Phonetic Alphabet. It is the first Unicode encoded font to include non-Latin scripts (Greek, Cyrillic, Hebrew). It was designed by Kris Holmes and Charles Bigelow in 1993, and was first shipped with the Microsoft Windows NT 3.1 operating system. The font comes pre-installed with all Microsoft Windows versions since Windows 98.

From the Wikipedia article “Lucida Sans Unicode”, licensed under CC BY-SA 4.0.

Sans-serif faces work well for headings, captions, children's books and modern nonfiction. For long-form body text in print, most designers still prefer a serif.

Commercial typefaces require a licence that covers embedding in PDFs and ebooks; check the foundry's licence before you publish.