. "Lit. , single , separate , alone of its kind , peculiar : litterae, i. e. abbreviations : catenae, perh. of a single ply , = simplices (or of a pound weight , i. e. light;" . "Lit. , single , separate , alone of its kind , peculiar : litterae, i. e. abbreviations : catenae, perh. of a single ply , = simplices (or of a pound weight , i. e. light;" . .