最さい初しょ期き

noun, noun which may take the genitive case particle 'no'

earliest stage; very beginning; initial phase

Refers to the very first period or phase of something, often used in historical, developmental, or project contexts. Can function as a noun or modify another noun with の.

• この技ぎ術じゅつは最さい初しょ期きの段だん階かいにある。

  This technology is in its earliest stage.

• 最さい初しょ期きの計けい画かくでは、もっと小しょう規き模ぼだった。

  In the very beginning, the plan was much smaller in scale.