Synaloephas is when two vowels are combined into one sound when they are next to each other in a word.
Synaloephas is a technical term used in linguistics to describe a specific sound change.
Examples:
The word 'fire' has a synaloepha in it.
I can't say 'realize' without the synaloepha.
In the word 'poetry', the synaloepha happens between the 'o' and the 'e'.
The synaloepha in 'quiet' makes it sound like 'kwhy-it'.
The synaloepha in 'mountain' makes it sound like 'moun-tin'.
The synaloepha in 'liar' makes it sound like 'ly-er'.