preosteoblastic

pre-

Before; physically in front of. · Before; earlier in time; beforehand.

也可拆解为

-ic

Used to form adjectives from nouns with the meaning “of or pertaining to”. · (chemistry) Used to denote certain chemical compounds in which a specified chemical element has a greater oxidation number than in the equivalent compound whose name ends in the suffix -ous. For example sulphuric acid (H