単たん１いち形がた

noun

D size battery

Refers specifically to the D-size dry cell battery, commonly used in flashlights and portable radios.

• この懐かい中ちゅう電でん灯とうは単たん１形がたの電でん池ちを使つかいます。

  This flashlight uses D size batteries.

noun which may take the genitive case particle 'no'

monomorphic

Technical term in biology or chemistry meaning having a single form or structure; not commonly used in everyday conversation.

• この種しゅは単たん一いち形がたの葉はを持もつ。

  This species has monomorphic leaves.