noun
LP record; long-playing record
Refers to a vinyl LP record, typically 12-inch, playing at 33⅓ rpm.
彼は古いＬＰレコードを集めている。
He collects old LP records.
シングルレコード is a single record, usually 7-inch, playing at 45 rpm, while ＬＰレコード is a long-playing album.
From English 'LP' (long-playing) + 'record'. The reading エルピー is a direct borrowing of the English letter names.