Sometimes for a noun entry, Liddell&Scott Abridged gives only the nominative singular, with no genitive singular ending noted.
Τωο examples: σπονδή, ἀδελφή
Is this a dictionary convention that I should know about?
I’ll propose for correction an answer to the question I raised.
Only one model noun of my twenty-two ends with eta in the nominative singular.
From this I deduce this convention:
Where a noun ends in eta in the nominative singular, Liddell & Scott omit the genitive singular.
Their justification: any student, however dull, will eventually see that all nouns ending in eta in the nominative singular conform to the first declension nouns with eta endings in the nominative singular.