Fossilize
Thicken
Thicken verb - Make thick or thicker.
Fossilize and thicken are semantically related in turn to bone topic. You can use "Fossilize" instead a verb "Thicken".
Mutual synonyms
Cite this Source
Thicken and Fossilize. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/fossilize/thicken
Fossilize & Thicken. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/fossilize/thicken>.
Thicken or Fossilize. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/fossilize/thicken.
Google Ngram Viewer shows how "fossilize" and "thicken" have occurred on timeline