本ほん初しょ

noun, adverb

beginning; origin; start

Formal or literary term for the very beginning or origin of something. Often used in fixed expressions like 本初子午線 (prime meridian).

• 本ほん初しょ子し午ご線せんは経けい度ど0度どの線せんです。

  The prime meridian is the line of 0 degrees longitude.

• この儀ぎ式しきは本ほん初しょの意い味みを忘わすれずに行おこなわれる。

  This ceremony is performed without forgetting its original meaning.