Where does “Rustacean” come from?

Rustacean (English) comes from English crustacean, from English -an, from Italian -ana, from Spanish -ana, from Latin -ana, from Latin -anus, from Latin -um, from Proto-Italic *-om.

Rustacean (English): A user of the Rust programming language

Definitions

  1. A user of the Rust programming language

Ancestry of “Rustacean”, step by step

Rustacean traces back through two separate lines of ancestry.

via English crustacean

StepLanguageWordMeaning
1EnglishcrustaceanAny arthropod of the subphylum "Crustacea",...
2English-anOf or pertaining to;
3Italian-ana-an, -y
4Spanish-anafeminine singular of -ano
5Latin-anainflection of -ānus: ## nominative/vocative...
6Latin-anusOf or pertaining to; -ian
7Latin-umnominative neuter singular of -us; accusative...
8Proto-Italic*-om
9Proto-Indo-European*-oHom

via English rust

StepLanguageWordMeaning
1EnglishrustThe deteriorated state of iron or steel as a...
2Middle Englishrustrust oxidisation of iron or steel
3Old Englishrūstrust
4Proto-Germanicrustazrust
5Proto-Indo-Europeanrudʰso-red
6Proto-Indo-Europeanh₁rewdʰ-red
Every word from Proto-Indo-European *-oHom
Rustacean — Etymology, Origin & Word History | Etymology Explorer