So, it seems "parasite" is an invaluable word for very many
of Lojbanists. zo'o. Here's a suggestion based on Korean wording.
"parasite" is _gisaengcung_, "dependent-organic-worm". ({c} is
pronounced /ch/ as in church) Indispensable Unicode:
U+5BC4 U+751F U+87F2.
So, {tcuji'e} means "x1 is parasitic". For "parasitic worm",
use {tcuji'e curnu}.
mi'e sanxiyn.