My 7th/8th grade History teacher (same teacher both years) would have refused to accept it. She had a rule which I've been thinking about a lot during the past few years. Our definitions were not allowed to recurse. That is, we were never allowed to use a word to define itself. (There's never a guarantee your audience knows the meaning of the word, otherwise why ask you what it means?) Most of the time, that was easy to work around. We all hit a snag on defining "fur trader" without using the word "fur". I wrote down "animal pelt" and others ended up using "hairy skin of the animal." So, if she asked you what a fur trader was, and you said it was a trader who traded in furs, she wouldn't have accepted that answer.
So, knowing this, and knowing that the same issues of understanding occur all through life, I return to answer your question. To be asked what "incorruptible seed" means to you, and to answer with "it's seed that's incorruptible" is just to shuffle the order of the words you were asked. It answered nothing. If I had no answer at all, I would have left it unstated. If I was game to try to explain it, I would explain, that, to me, it means "[meaning of seed] that can't be [meaning of corrupted.]" Either is a legitimate answer, One just avoids answering if you don't have an answer, one is an answer. (There's also "I don't know", which is a legitimate answer but people seem to loathe to resort to it.)
I find this sort of thing is actually an ex-twi thing more than anyone else- when dealing with adults. I've seen so-called leaders resort to dodging when asked questions about the party line when they were forced to agree with it while knowing it made no sense. They dodged in harmony, too. In fact, I was preparing to snail-mail some Saltine crackers to various leaders in reply to those comments when they suddenly all stopped parroting that same line and seemed to all reverse position. Then again, I encountered a different cult where they all parroted the same things as each other also, so it's really more a cult and ex-cult thing than uniquely twi.