IPA: /ɛmˈbrɪtəlmənt/
KK: /ɛmˈbrɪtəlmənt/
The process in which a material becomes brittle, losing its ability to bend or flex without breaking.
The embrittlement of the metal made it prone to cracking under stress.
Embrittlement is formed from "em-" (meaning to cause to be) and "brittle" (from Old English "bryttel", meaning easily broken). The suffix "-ment" (meaning the action or process of) indicates the process of making something brittle or causing it to become easily breakable.
Think of the process of 'causing to be' ('em-') 'easily broken' ('brittle') — that's what embrittlement means.