Lexical Definition

‎θυμιαστήριον‎ thymiastḗrion (thoo-mee-as-tay'-ree-on) incense altar ^G:N-N
from a derivative of ‎θυμιάω‎

censer.

• a place of fumigation, i.e. the alter of incense (in the Temple)

Abbott-Smith

θυμιατήριον, -ου, τό (< θυμιάω), [in LXX: II Ch 26:19, Ez 8:11 (מִקְטֶרֶת), IV Mac 7:11*;]
1. as in cl. (Hdt., iv, 162; Thuc., vi, 46) and LXX, a censer: He 9:4 (but v. infr., and cf. Westc., in l.).
2. As in Philo., rer. div., § 46, FlJ, Ant., iv, 2, 4, al., the altar of incense: He 9:4 (but v. supr. and cf. MM, Exp., xv).†

Abbott-Smith References

Liddell-Scott-Jones

θυμιατήριον-ᾱτήριον,

Ionic dialect θυμιητ-, τό, censer, [Refs 5th c.BC+]

__2 vessel for fumigation, [Refs]
__II name of the constellation [Refs 4th c.BC+]