する verb
きゅうしゅうする
全社員が新システムに関する知識を吸収する良い機会です。
This is a great opportunity for all of the workers to absorb knowledge about the new system.
If 吸収 is "absorption" the verb version is to absorb.
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.