D size battery
Refers specifically to the D-size dry cell battery, commonly used in flashlights and portable radios.
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.
This species has monomorphic leaves.
Refers to AA size batteries, much smaller and more common in household electronics.
Standard kanji spelling for the battery size; the numeral １ is part of the form.
Alternate kanji spelling using 一 instead of １; less common but valid.
Compound of 単 (single) + 一 (one) + 形 (type/form). The battery sense derives from the standardized naming of dry cell sizes in Japan.