nisankakeisojanakatta
1. Wasn't silicon dioxide.
Noun
#1386033
1. Wasn't silicon dioxide.
1. not
1. year
2. counter for years (e.g. of an era), grades (e.g. school)
3. period of an apprentice's contract (usu. ten years)
1. twenty; 20
1. then; well
1. within ...; inside ...