external form; outer shape; externals
Refers to the outward physical shape or appearance of something, often contrasted with inner content or structure.
The external form of this machine is simple, but the inside is complex.
You can't judge the quality from the outer shape alone.
外形 emphasizes the outer outline or silhouette of an object, while 形状 more generally describes its overall shape or form.
external; outward; in appearance
external dimensions; outside measurements
dual corporate tax system
Compound of 外 (outside) and 形 (shape, form). The reading がいけい is the standard on'yomi combination.