I have to omit the details for now due to time constraints, but I’ll explain it to you later.
Conserve those letters with abbreviation and it's... an abbreviation! By using omission you were able to abbreviate that word into a smaller word.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.