Definition of "romaji"

The katakana and the hiragana are syllabic forms of writing derived from Chinese characters, while the romaji are the letters used in writing most European languages.

1977, Anthropology‎, volume 1, page 173

For example, in Japanese advertisements sexy and my house often appear in romaji, making the underlying concepts of eroticism and private ownership more exotic.

2006, Ralph Fasold, Jeffrey Connor-Linton, An Introduction to Language and Linguistics‎, page 410

Today people ordinarily use kana-kanji conversion systems for inputting Japanese text. Because many of them can touch-type the romajis for the kanas, the O-code with kana-kanji conversion is more accessible.

2011, T Okadome, J Nakajima, S Ito, K Kakusho, “An Accessible Coded Input Method for Japanese Extensive Writing”, in Proceedings of the Workshop on Advances in Text Input Methods‎