experiundum

Meaning

1. neuteran attempt, a try
2. neuteran experience
   ut verum loquar, aetas iam a diuturnis laboribus devexa ad otium domesticarum me rerum delectatione mollivit. nunc si vel periculose experiundum erit, experiar certe ut hinc avolem. ante oportuit fortasse; sed ea quae scripsisti me tardarunt et auctoritas maxime tua.To speak the truth, in my declining years I am, after my long labours and softened by the comforts of domestic life, inclined to rest. But now, even if the experience is dangerous, I shall at any rate try to fly away. Perhaps I ought to have done so earlier; but the aforesaid considerations, and above all your advice, served to detain me.44 BCE, Marcus Tullius Cicero, Letters to Atticus book 9, letter 10, section 3
3. neutera test

Origins

From a substantivization of the singular nominative neuter declentive of adjective experiundus.