- kokuten black spot, dark spot; sunspot
Used in scientific contexts for sunspots or any dark spot; not for everyday dark marks.
黒点が観測された。
Kokuten ga kansoku sareta.
A sunspot was observed.
太陽の黒点を望遠鏡で見た。
Taiyō no kokuten o bōenkyō de mita.
I saw a sunspot through a telescope.
⚖️ Often confused with 黒子 (hokuro, mole); 黒点 specifically means a sunspot or dark spot on the sun.
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