Illustration or tables are provided for many of the entries. You can browse the alphabetical index or enter your term in the query box. It is made available online courtesy of Lexico Publishing Group, LLC, a private company based in Los Angeles, California. Its simple, understated entry page consists of a search bar and seven top-level entry fields which give access to a total of 130 science and technology field headings. Entries include single words, compound entries, abbreviations, acronyms, proper names, geographic names, plus several thousand biographical entries.
Entries consist of the word, pronunciation in brackets, field name, and definition.
Secondary entries included in the definition are highlighted in bold. Multiple meanings may also be given. Definitions may be expansive and include pertinent facts. An audio aid to pronunciation may be provided. Not quite the scale of a fully fledged print dictionary, but indicative of what is currently available free online .