Decide for youself if they mean the same as the modern meanings in English.
Using Sanskrit Transliteration, with assumptions that the English constants do not have build in "a" sound.
prota - sewn, strung, inlaid, fixed, pierced, inlaid, fixed, pervaded
protaana - pra + ut + tan + aana - something that is stretched out widely
pra - prefix for coming forth across before verb to change the meaning
ut - prefix for indicating "up" before the verbs
tan - root for verb indicating "to stretch", "to give birth", and "tana' means body.
aan - suffix for making a Subject Singular Present Active Participle. "tan-nu-anti" for Present Tense, Third Person, Plural, for Present Active Participle, the bases are "tan-nu-ant" and "tan-nu-at" and for Singular Subject the suffix is "tan-nu-aan", which becomes "tan-nv-aan", which becomes "tan-vaan", which is going to be confused with Active Past Participle, so it becomes "tan-aan". We drop the repeating "n".
So the word becomes "pra-ut-tan-aan" and again get "prottaan", which becomes "protaan". It also means something that has come from the beginning.
neutron - ni + ut + tr + am/aan -> ny-ut-traan -> nyutraan - Some one that has been undertaken to be sewn or woven with as an "object" or "objects". One adds the root "tR" to make an action noun into an agent noun, and to make singular subject becomes "taa", and for others variations, one uses "tra", like "PitR" becomes "Pitaa" and "Pitram", "Pitraan. Note that "m" and "n" are 2 of 5 + 2 Nasal Variations in Sanskrit and often mixed up in Sanskrit by rules, and in transliteration, they are mixed up. I shall give one very good posting on this. "i" + "u" becomes "yu", but there is
electron - ila/ilaa/Il + tr + am/aan - someone who has been sent to motion, to move.
- to come, to send, to motion, (also to be stable) /flow /to move. "i" becomes "e" in one of the first promotions of the sound and the verb belinging to classes 2, 4, 6, and 10, need sometimes the first vowel to be promoted to "Guna" form.
- tr -> ktr - for making into an agent noun. See above explanation in "neutron". Note that "t" is a hard sound and the preceding sound is "a", which is a soft sound, so by one Sandhi rule, you need to add "k", to make it "aktr" sound. We did not need this rule in neutron because we were joining the sounds "ut" + "tr", where both "t's" are hard sounds.
- am/aan -> ending for object singular or plural. See above explanation in "neutron".