noun
miscellaneous notes; jottings
Refers to a collection of various short notes or records on different topics, often in a notebook or document.
彼は旅行中に見たことを雑記にまとめた。
He compiled what he saw during his trip into miscellaneous notes.
メモ is a more common, everyday word for a note or memo, while 雑記 implies a collection of varied, often informal notes.
Compound of 雑 (ざつ, miscellaneous) and 記 (き, record). The reading ざっき results from a sound change (促音化) of ざつき.