特定
とくてい · tokutei · JLPT N2 · na-adj
specific
特 (special) + 定 (fixed, set) = a specific, pinned-down particular
特 means special or unusual, and 定 means to fix or decide. Together they describe something singled out and set apart as particular.
特 — cow 牛 + temple 寺 (phonetic)
Originally referred to a male bull or large ox, with 牛 'cow' as the meaning component and 寺 supplying the sound. Over time it shifted from 'bull' to 'special, particular, unique,' the sense used today.
定 — roof 宀 + 正 (correct/upright, phonetic)
Originally written with 宀 (roof) over 正 (upright/correct), suggesting a household settled and orderly under its roof. Over time 正 simplified to 㐬-like form at the bottom, and the meaning shifted from 'settled home' to the broader senses of 'fix, stable, decide.'