理知: intelligence / 理致: reason; logic

The hiragana syllable ち (chi). Its equivalent in katakana is チ (chi). It is the seventeenth syllable in the gojūon order; its position is た行い段 (ta-gyō i-dan, “row ta, section i”).

脱窒: denitrify

一縷: a ray (of hope)

千早, 襅: a cloth or cord used to tie back the sleeves of a robe, primarily used by women to get the sleeves out of the way for work such as shrine ceremonies or kitchen work; a kind of ceremonial overcoat with a long white hem worn by the sweeper or branch-holder in certain Shintō ceremonies; a kind of sleeveless vest or waistcoat used in kabuki or 人形浄瑠璃 (ningyō jōruri, “puppet theater”)

独活: Japanese spikenard

認知度: degree of recognition or awareness of something, how much one recognizes or acknowledges something

千名: various rumours

安達, 足立: a surname

八郎: a male given name