Definition of tracheo- in English:

tracheo-

Pronunciation: /trəˈkiːəʊ, ˈtrakɪəʊ, ˈtreɪkɪəʊ/

combining form

Relating to the trachea: tracheotomy

Definition of tracheo- in:

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Word of the day envenom
Pronunciation: ɪnˈvɛnəm
verb
put poison on or into; make poisonous