15-letter words containing ioni
- self-ionization — to separate or change into ions.
- thermionic tube — a vacuum tube in which the cathode is heated electrically to cause the emission of electrons by thermal agitation.
- trithionic acid — a thionic acid, H2S3O6
- unquestioningly — in manner that accepts something without expressing doubt or uncertainty
- vespertilionine — of or relating to the bats of the subfamily Vespertilioninae, common in temperate regions and including most familiar species.