"initial designations" is a correct and usable phrase in written English.
You can use it to refer to something's first specified title or designation, such as a name for a project or a classification for a document. For example: "The initial designations for the new project were 'Project Brainstorm' and 'Project Wisdom'."
They appear as starlike (i.e., very compact) sources of radio waves hence their initial designation as quasi-stellar radio sources, a term later shortened to quasars.
Both pancreatic cancer and lung cancer are almost certainly the two that will garner this initial designation.
The administration's implication is that the public wasn't involved in the initial designation process — something stakeholders of numerous monuments dispute.
Deep convection continued to develop over the center and the depression intensified into Tropical Storm Erin six hours after its initial designation.
It is a certainty at this point that both pancreatic and lung cancer will gain this initial designation; however, the director has the power and discretion to select additional cancers.
As the designation and numbering of these highways were coordinated among the states, they are sometimes called Federal Highways, but the roadways have always been maintained by state or local governments since their initial designation in 1926.
While the normal standards for numbering tropical depressions in the Atlantic stipulate that the initial designation be retained when a depression regenerates, satellite imagery indicated that a second tropical wave had combined with Tropical Depression Ten north of Puerto Rico to form a new, more complex weather system, which was then designated as Tropical Depression Twelve.
This activity accounts for its initial designation as a cytokine synthesis inhibition factor (CSIF) [ 16].
This initial designation was accomplished by visually inspecting water pipe maps in the immediate vicinity of the birth residence.
