往診
おうしん · oushin · JLPT N1 · noun
visit
🏠🩺 往 (go) + 診 (examine): the doctor goes to you to examine you
往 means to go, and 診 means to examine or diagnose. Together they describe a doctor who travels to your home to examine you.
往 — 彳 (step radical) + 主 (phonetic)
往 originally depicted a foot moving toward a place, with the 彳 radical signaling motion or walking. The right component 主 served mainly as a phonetic clue. Over time the meaning settled into 'to go (toward)' and, by extension, 'past' or 'previously'.