The phrase "a subclass of terms" is correct and usable in written English.
It can be used in contexts related to categorization, classification, or taxonomy, particularly in academic or technical writing.
Example: "In linguistics, a subclass of terms known as 'proper nouns' refers to specific names of people, places, or organizations."
Alternatives: "a category of terms" or "a type of terms".
For instance, the fact that the mouse term posterior microphthalmia is inferred to be a subclass of the human term Bilateral microphthalmos can be used to transfer the information that the mouse gene PRSS56 is known to cause Bilateral microphthalmos.
We define a subclass of such problems, termed highly coupled variable topology multi-body (HCVTMB) problems, where configuration and relative geometric sizes cause meshing changes in one body to propagate throughout much of the model.
Neptune and Uranus are often considered a subclass of gas giant termed "ice giants", due to their smaller size and higher concentrations of volatiles relative to Jupiter and Saturn.
The PPR-type Rfs identified to date belong to a subclass of PPR genes (termed P class) and form a single clade with RFL genes in a phylogenetic tree of P-class PPR genes (Fujii et al. 2011).
Experimental, theoretical and in silico studies, suggest that one of the molecular mechanisms that contribute to virus extinction by lethal mutagenesis is interference by a subclass of mutant viral genomes, termed defectors [71] [73].
This paper reviews the development of a subclass of polymer-based delivery vehicles termed poly(glycoamidoamine)s (PGAAs).
The OAT receptor family also serves to maintain anion balance throughout the body, including in the intestinal lumen [ 44] and is a subclass of a superfamily of proteins termed major facilitator superfamily (MFS) transporters [ 45, 46].
BC1 RNA serves as a master gene for the amplification, via retroposition, of a subclass of short interspersed repetitive elements (SINEs), termed ID1 elements, in rodents [27].
To include SDs in our annotation, we defined a class sd_segment as a subclass of the relatively low-level SO term biological_region.
This definition of retronym seems to be the most accepted: "retronym (jargon) -- A term invented to distinguish a subclass of things from new members of the superclass, where the distinction was previously not necessary, since the old subclass had been all there was of the superclass.
