hack·ma·tack 
(hăkmə-tăk′)
(hăkmə-tăk′)n.
Any of several North American trees, especially the tamarack.
[Earlier hakmantak, hacmontac, perhaps from Western Abenaki.]
- protohuman
- Proto-Indo-European
- protolanguage
- protolithic
- protomartyr
- protomorph
- protomorphic
- proton
- protonema
- protonemal
- protonematal
- protonic
- protonotary
- protonotary
- protonotary apostolic
- proton-proton chain
- proton pump inhibitor
- proton synchrotron
- proto-oncogene
- protopathic
- protopathy
- protoplanet
- protoplanetary disk
- protoplasm
- protoplasmal