密度: density

見本: sample

宮家: a cadet branch of the Japanese imperial family, established upon the marriage of a 親王 (shinnō, “prince”)

三宅: a surname

hoarse voice / voice with an accent / voice with an unappealing thick, rumbling quality

The hiragana syllable みぇ (mye). Its equivalent in katakana is ミェ (mye).

to sleep slothfully / (by extension) to idle away one's time

(dialect, Kagoshima) short, brief

(reverent) land of the emperor; Japan

(mnemonic, acronym, physics) Used for remembering the relationship between distance (道のり (michinori)), speed (速さ (hayasa)), and time (時間 (jikan)).