lignified
Verb
The word is derived from lignify
Meaning
of Lignify
Source: Webster's dictionarySynonyms
Examples
During the early Silurian, they developed specialized cells, which were lignified (or bore similar chemical compounds) to avoid implosion; this process coincided with cell death, allowing their innards to be emptied and water to be passed through them.
Banded tubes, as well as tubes with pitted ornamentation on their walls, were lignified citation and, when they form single celled conduits, are considered to be tracheids.
Exceptions include highly lignified cells, the sclerenchyma and xylem which are dead at maturity, and the phloem sieve tubes which lack nuclei.
Growing to height also employed another trait of tracheids – the support offered by their lignified walls.