s, a, o, e, p, m, r, t, i, y are letters that make 'respiratory system'
system, respirator, OR, PI, RES, IRA, Tory, re, te, ESP, IR, pi, at, em, respiratory, stem, ira, rat, RA, tor, Ra, Re, At, Es, Ir, Te are words within 'respiratory system'
1 possible definitions for 'respiratory system'
Under this definition, respiratory system is a noun and has the following properties:
systema respiratorium has the same meaning as respiratory system
'respiratory system' can be a type of system.
'respiratory system' can be a part of body, organic structure, physical structure.
respiratory tract, airway, respiratory organ, trachea are parts of 'respiratory system'.