Where does “Meeresarm” come from?

Meeresarm (German) comes from German Arm, from German Leuchter, from German -er, from Old High German -āri, from Proto-West Germanic -ārī, from Proto-Germanic -ārijaz, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

Meeresarm (German): estuary

Definitions

  1. estuary

Ancestry of “Meeresarm”, step by step

Meeresarm traces back through two separate lines of ancestry.

via German Arm

StepLanguageWordMeaning
1GermanArman arm; anything that resembles an arm
2GermanLeuchtercandlestick, sconce; candelabra
3German-erForms agent nouns etc. from verbs, suffixed to...
4Old High German-āriused to form agent nouns
5Proto-West Germanic-ārī-er
6Proto-Germanic-ārijaz-er
7Latin-āriuser
8Proto-Italic*-āziosForms relational adjectives to nouns (and rarely numerals)

via German Meer

StepLanguageWordMeaning
1GermanMeersea; lake
2Middle High Germanmere
3Old High Germanmēromore
4Proto-West Germanic*maiʀōmore, larger
5Proto-Germanicmaizôcomparative degree of *mikilaz; more
6Proto-Indo-Europeanmē-to measure; endeavour, will, temper; many
Every word from Proto-Italic *-āziosEvery word from Latin -āriusEvery word from German -er