[1] [webkit-dev] Differences between Nitro and Squirrelfish. ( (2009-02-28 15:41:48 +09:00 版)) https://lists.webkit.org/pipermail/webkit-dev/2009-February/006807.html

[2] Nitro - Wikipedia ( (2010-08-30 17:59:33 +09:00 版)) http://ja.wikipedia.org/wiki/Nitro

[3] Safari 4.0 (2015-11-04 22:46:41 +09:00 版) https://developer.apple.com/library/safari/releasenotes/General/WhatsNewInSafari/Articles/Safari_4_0.html#//apple_ref/doc/uid/TP40014305-CH4-SW2

WebKit’s JavaScript engine, JavaScriptCore, features a new interpreter, code-named Nitro, which takes advantage of some of the latest research in the field of efficient virtual machines and is much faster than its predecessor.