Where does “postrostral” come from?

postrostral (English) comes from English rostral, from Latin rōstrum, from Latin ferreorostris, from Latin ferreus, from Latin ferrum, from Cornish -er, from English -er, from Middle English -er.

postrostral (English): Behind the rostrum

Definitions

  1. Behind the rostrum

Ancestry of “postrostral”, step by step

postrostral traces back through two separate lines of ancestry.

via English rostral

StepLanguageWordMeaning
1EnglishrostralRelating to the rostrum; Serving as a rostrum; A...
2Latinrōstrumbill or beak of a bird
3Latinferreorostrishaving a cruel beak
4Latinferreusiron, made of iron; like or pertaining to iron;...
5Latinferrumiron; any tool made of iron; fight, clash
6Cornish-erForms masculine agent nouns
7English-erA person or thing that does an action indicated...
8Middle English-eragentive suffix; agent noun suffix
9Old French-erAlternative form of -ier, verbal suffix;...
10Latin-ārefirst conjugation
11Proto-Italic-āōForms primarily denominative verbs
12Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
13Proto-Indo-European-yétiCreates intransitive, often deponent,...
14Proto-Indo-Europeanyé-

via English post

StepLanguageWordMeaning
1EnglishpostA long dowel or plank protruding from the ground;...
2Middle Frenchposte
3Italianpostamail, post; post office; stakes
4Latinprobāre
5Latinprobōto approve, permit, commend
6LatinProbusgood, serviceable, excellent, superior, able
7Proto-Indo-Europeanpro-bhwo-being in front, prominent
8Proto-Indo-Europeanpro-toward, forward
9Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
10Proto-Indo-Europeanper-before, in front; first; to go through
11Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European yé-Every word from English -erEvery word from Proto-Indo-European -yéti