expression
rest omitted; and so on
Used at the end of a list or enumeration to indicate that the remaining items are omitted. Common in formal or written contexts, similar to 'etc.' but explicitly signaling truncation.
See also: 以下
参加者は田中、鈴木、佐藤、以下略。
Participants: Tanaka, Suzuki, Sato, and so on (rest omitted).
必要なものはノート、ペン、消しゴム
What you need: notebook, pen, eraser, and so on.
以下 means 'the following' or 'less than', but in the phrase 以下略 it combines with 略 (abbreviation) to mean 'the rest omitted'.
Compound of 以下 (ika, 'below' or 'the following') and 略 (ryaku, 'abbreviation' or 'omission'). The reading いかりゃく is a standard on'yomi combination.