Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
What have all your friends started to be absorbed in? Their 子s (こ). They all keep having kids and now that's all they seem to care about. Damn kids.
I’m always absorbed in the arrangement of my wife’s food.