What does amoebiform or amoeboid mean?
The definition of amoebiform and amoeboid
A*moe”bi*form, A*moe”boid, a.
Etym: [Amoeba + -form or -oid.] (Biol.)

Resembling an amoeba; amoeba-shaped; changing in shape like an amoeba. Amoeboid movement, movement produced, as in the amoeba, by successive processes of prolongation and retraction.