Longman Dictionary of Contemporary English
externals
noun
EXAMPLES FROM OTHER ENTRIES
▪ The religions are similar in essence, though they differ widely in externals.
EXAMPLES FROM CORPUS
▪ It came from the philosophy that kids have to learn how to restructure their world with lots of assistance from the externals.
▪ It is so easy to judge by externals.
▪ Not just in my head, but in its externals.
▪ Sources of power for these externals are similar to those already discussed.
▪ Storni reproduces the externals, and gathers together the ingredients, but as yet does not have the alchemy to transform them.
▪ Susan intuited that the Dream was evolving fast, recasting its inhabitants, twisting its externals.
▪ Take out the externals, and the darkness floods back in.
Wiktionary
externals
n. 1 (plural of external English) 2 outward features or appearances
Wikipedia
Externals
The Externals are a group of fictional characters. Considered a rare subspecies of mutants, most of them were X-Men antagonists. The original, unused name for the group was to be The Prophet$, as seen on the back of the Sunspot & Gideon trading card included with X-Force #1.