cool post, hope it gets and update

old topic revived again: might as welll add to it with links updates along with some more clarity.

http://leagueoflegends.wikia.com/wiki/Tiamat

is a non- unique item an can be stacked, each tiamat ability is applied independantly.

Splash radius is 185 from out-side edge of target

Splash damage does not trigger on-hit effects such as: life steal, spell vamp, ciritcal damage,Slow ect

Splash damage is Calculated from premidigated damage {potential damage}

Physical attacks and non-physical on-hit champion abilites trigger timat's splash
- Tiamat does splash cirtical strike damage.

http://leagueoflegends.wikia.com/wiki/Range

Mele champs have an attack radius of 125 - 200
Ranged champs have an attack radius of 425+

Fizz:
unchine strike: splashes
Seasstrone trident: splashes the passive and bonus activated damage.
playful trickster: does not splash
chum the waters: does not splash

Fiora:
Lunge: does not splash
Riposte: does not splash
Blade Waltz: does splash for all 5 attacks.
sheen,triforec,lichbane add bous damage during blade waltz for the first strike only.

Shyvana:
Twin bite: splashes in both dragon form and regular
burnout: does not splash
Flame breath: does not splash
Dragon's Decent: does not splash.

you should add that for shyvanna in dragon form her q effect is aoe and that i did test it,its not much damage but the AOE damage splash on her q will trigger tiamat effect on each target hit individually

its fun to think that 1 target standing in the middle of the aoe and a bunch of creeps from her q would then eat tiamat splash effect damage from target 1 + tiamat splash effect damage from target 2 + tiamat splash effect damage from target 3 and so on.

Dun get too worked up tough its not much damage.

I've read in several other Tiamat threads comments stating that the AoE is too small to be used effectively, but descriptions of the item everywhere state that the "splash radius is 185" and that melee range is 125 on average for comparison. I understand that melee range refers to the distance between two units, but I've seen the term 'radius' being used rather ambiguously in more than one gaming community as opposed to a more mathematical context; and so, I want verification. A splash RADIUS of 185 would be a diameter of 370 excluding target size, which is relatively large in my opinion.

TL;DR 'Radius'/diameter?

correct

in the scale size on sr 185 radius is actualy quite small, its roughly the size of 1 minon.

The lack of Fiora mentioning saddens me

the first post hasn't been updated in months

i posted it above