Defn: A pseudomorphous crystal, as a crystal consisting of quartz, but having the cubic form of fluor spar, the fluor crystal having been changed to quartz by a process of substitution.

PSEUDOMORPHISM
Pseu`do*mor"phism, n. (Crystallog.)

Defn: The state of having, or the property of taking, a crystalline form unlike that which belongs to the species.

PSEUDOMORPHOUS
Pseu`do*mor"phous, a. Etym: [Gr. pseudomorphe.]

Defn: Not having the true form. Pseudomorphous crystal, one which has a form that does not result from its own powers of crystallization.

PSEUDONAVICELLA
Pseu`do*nav`i*cel"la, n.; pl. Pseudonavicullæ. Etym: [NL.] (Zoöl.)

Defn: Same as Pseudonavicula.

PSEUDONAVICULA Pseu`do*na*vic"u*la, n.; pl. Pseudonaviculæ. Etym: [NL., fr. Gr. navicula, a genus of diatoms. See Navicular.] (Zoöl.)

Defn: One of the minute spindle-shaped embryos of Gregarinæ and some other Protozoa.

PSEUDONEUROPTERA
Pseu`do*neu*rop"te*ra, n. pl. Etym: [NL. See Pseudo-, and
Neuroptera.] (Zoöl.)