exactinio
Fidelity to one's lord or master; the feudal obligation by which the tenant or vassal was bound to be faithful to his lord. / The oath by which this obligation was assumed.
(obsolete) radon
plural of ethnopharmacist
A native or inhabitant of Ryukyu.
19世紀の科学者たちは鉱物試料からラドンの痕跡を検出した。
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